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A race car driver speeds up from 60 miles per hour to 90 miles per hour in 3 seconds what was her acceleration in mphsec?
Lilushik
acceleration =(90-60)/(3)=10 mphs=10 mile per hour sec Ahmad Jordan
Wiki User
∙ 15y ago
GLADYS Cumbie
10 miles
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What occurs any time and objects speeds up slows down or changes direction?
When an object speeds up, slows down, or changes direction, it is changing it's velocity, also known as accelerating.This is a common term in mechanical physics. The formula for velocity is D(distance) / T(time) whereas acceleration is the change in velocity which takes time to do making its fomula: D/T^2
How does a centrifuge work?
Centripetal acceleration is the force inwards on an object moving in a circular motion.A centrifuge uses an acceleration (in terms of g, which is the acceleration due to gravity) that is specified by the user. A centrifuge uses 2 rotors at the same rotational speed but with different diameters to create 2 different accelerations.Particles of different masses will separate in the centrifuge because they move at different speeds due to acceleration.
What is the acceleration of a 25 kg mass pushed by a 10 N force?
Force (F) = mass (m) x acceleration (a) [ F = m x a ], therefore acceleration = Force / mass, so a = F / m = 10.0N / 1.25kg, so acceleration is 8m/sec2 [To be totally "correct" as far as physics is concerned, there are direction vectors associated with both Force and acceleration. We need to know which way the Force is applied so we can determine the direction of the acceleration. This is important if the object is moving. If we apply a force in the direction of motion, the object speeds up, but in the opposite direction, the object slows down. You can see the importance in that, but we can ignore vectors for many problems in mechanics. Just don't forget that the "directionality" of Force and acceleration exists. Sooner or later you'll need it.]
What types of change in motion causes acceleration?
Motion is the change of position over time. The rate of change of position is called or speed. Speed combined with its direction is called velocity. The rate of change of velocity is called acceleration. So, motion in which the speed or direction are changing is accelerated motion. The question uses the word cause, which may be confusing. Technically when a force is applied to a mass, there is acceleration. When there is acceleration the velocity changes. If the object was in motion to begin with, it would speed up or slow down or change direction. If the object was at rest, the force would have caused an increase in speed from zero, so it would start moving. Therefore if you think of a causal relationship, it would be more proper to say force causes acceleration, which IS a change in motion. For an example, an easy one is your bicycle. If you pedal, you are applying force. That force cause the bicycle's speed to increase ... acceleration ... and you are in motion. If you apply more force, you will go faster. If you apply the brakes, you will slow down which is also acceleration (because speed is changing). There is only one way to have motion without acceleration and that is to travel at a constant velocity ... constant speed in a straight line. In practice, there is no motion without acceleration for any period of time, because there is always some minute change in speed or direction.
What is the equation of newton's second law of motion describes the relationship of forces mass and acceleration?
Newton wrote that force is equal to the rate of change of momentum. This isF = dp/dt (1). As momentum, p, is the product of mass, m, and velocity, v,(1) is equivalent to F = dmv/dt (2). Velocity is the rate of change of position,and becomes acceleration under differentiation with respect to time. Applyingthe product rule to (2) gives F = vdm/dt + mdv/dt. Unless a body's mass ischanging (e.g. ejecting fuel to take off, or moving at relativistic speeds),dm/dt = 0. So (2) becomes F= mdv/dt. But dv/dt is the acceleration, a.So we can see that F = ma.
Erin speeds up from 0 to 8 meters per second in 4 seconds what is her acceleration?
2 m/s2. Acceleration is (speed gained)/(time taken), In this case 8/4=2
A race car driver speeds up from 60 miles per hour to 90 miles per hour in 3 seconds What was his acceleration in sec?
Acceleration = (change in speed) divided by (time for the change)= (30 mile/hour) / (3 seconds) = (30 mile/hour x 5,280 feet/mile) / (3,600 sec/hour x 3 seconds)= (30 x 5,280) / (3,600 x 3) = 14 and 2/3 feet per second2 = about 0.457 G
What is a scientific term for 'speeds up '?
The scientific term for 'speeds up' is acceleration
What is the acceleration of a car that goes from 40 kmhr to 80 kmhr in 2 seconds?
First, convert the speeds to SI units, that is, to meters/second. Then, simply subtract the difference in speed by the 2 seconds. The result will be in meters/sec2.
At higher speeds a vehicle's rate of acceleration will be?
There's no necessary connection between a vehicle's speed and its acceleration.
A motorcycle speeds up from 10 ms to 25 ms in 5 seconds What is the motorcycle's acceleration?
The average acceleration during any interval is (change in speed) divided by (time for the change).A = (25 - 10)/5 = 15/5 = 3 meters per second2
What is the average speed of a car that speeds up from 60 miles per hour to 70 miles per hour in 8 seconds?
The answer depends on whether the rate of acceleration is uniform. There is no indication in the question that it is.
An eagle accelerates from 15 meters per second to 22 meters per second in 4 seconds. What is the eagle's average acceleration?
Average acceleration is the amount of acceleration per unit of time that a thing or an object undergoes. It is simple to discover. To find the average acceleration, we need only find out how much acceleration occurred and over what period of time. If we have the starting and the ending speeds, then by subtracting them we can find the chane of acceleration. Then we can divide that acceleration by the time it took to occur. The eagle in our example accelerates from 15 m/s to 22 m/s over a period of 4 seconds. His total acceleration was 7 m/s (22 m/s minus 15 m/s = 7 m/s), and, since it took 4 seconds to increase his speed by 7 m/s, the average acceleration is the total acceleration divided by the time it took to happen (as was stated). The average acceleration is 7 m/s divided by 4 seconds or 1.75 meters per second.
A car traveling at 8 meters per second due north speeds up to 10 meters per second in the same direction If it takes the car 5 seconds to change its velocity what is the car's acceleration?
Magnitude of acceleration = (change in speed) / (time for the change) = 2/5 Acceleration = 0.4 meters per second2 north
A car traveling at 25 meters a second speeds up to 40 meters a second over a period of 15 seconds what is the average acceleration of the car?
Average acceleration = (change in speed) divided by (time interval)A = (40 - 25) / 15 = 15/15 = 1 meter/sec2
What occurs every time an object speeds up or slows down?
Acceleration
What is the acceleration of a mass of 2 kg that speeds up from 4 m per s to 10 m per s in 4 seconds?
Acceleration = (change in speed) / (time for the change) = (10-4) / 4 = (6/4) = 1.5 m/s2The mass of the object makes no difference at all.
