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Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
-- You haven't said what the object's speed was at the beginning of the
25 minutes. We'll assume that it started from rest at the beginning of
this whole exercise.
-- We're also going to work exclusively with the object's speed. Since you
haven't said anything about the direction in which it moves at any moment,
we have no way to work with velocity. Fortunately, it doesn't matter.
The motion occurs in three distinct periods, which we'll consider separately:
Period I:
Zero to 90 m/s in 25 minutes.
Average speed = 45 m/s.
Distance = (average speed) x (time) = (45 meter/sec) x (60 sec/min) x (25 min) = 67,500 meters.
Period II:
(90 meters/sec) x (3,600 sec/hour) x (2 hours) = 648,000 meters
Period III:
A perfect time-reversal of Period-I ... like running the video backwards.
Same distance as Period-I = 67,500 meters.
Total distance = (67,500) + (648,000) + (67,500) = 783 kilometers.
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Period-I
S = vit + 1/2 a t2
vi = 0
Acceleration = [ (90 meter/sec) x (1/25 min) ] x (1 min/60 sec) = 0.06 meter/sec2
t = 25 minutes = 1,500 sec
1/2 a t2 = 1/2 (0.06) (1,500)2 = 67,500 m
Period-II
S = v t = (90 meters/sec) x (2 hours) x (3,600 sec/hour) = 648,000 m
Period-III
Either recognize that Period-III is exactly the same as Period-I in reverse,
or else
you can use
S = vit + 1/2 a t2
vi = 90 meters/sec
t = 25 min = 1,500 sec
Acceleration = -0.06 meter/sec2
vit + 1/2 a t2 = (90)(1,500) + 1/2(-0.06)(1,500)2 = (135,000) + (-67,500) = 67,500 m
How much is the fine for 51 mph over speedlimit in mo?
The fine for going 51 mph over the speed limit in Missouri can vary depending on the county where the violation occurred. Generally, excessive speeding fines can range from $200 to over $500, and may also result in other penalties such as license suspension or points on your driving record. It is best to contact the county's municipal court where the violation occurred for specific information.
Is 327 kilometers per hour converted into miles per hour?
16.777 mi
Algebraic Steps / Dimensional Analysis Formula 27 km*100000 cm
1 km*1 in
2.54 cm*1 mi
63360 in=16.77702219 mi
Direct Conversion Formula 27 km*1 mi
1.609344 km=16.77702219 mi
What is 38 miles into miles per hour?
To convert 38 miles into miles per hour, we would need to know the time taken to travel that distance. Miles per hour is a unit of speed, so without the time component, the conversion cannot be calculated.
When does an object have no kinetic energy?
An object has no kinetic energy when it is at rest or not in motion. Kinetic energy is the energy an object possesses due to its motion, so when there is no motion, there is no kinetic energy present.
What is 186000 mph in feet per second?
There are 5280 feet in 1 mile
There are 60 minutes in an hour and 60 seconds in each minute which means there are 60*60 = 3600 seconds in an hour.
That means that 1 MPH = 1 mile for every 1 hour = 5280 feet for every 3600 seconds.
So, 1 MPH = 5280/3600 ft/s = 1.4666 ft/s
So, to convert, just divide 1800 by 1.4666 = 1800/1.4666 = 1227 miles per hour.
And to convert from MPH to feet per second, just multiply by 1.4666.
How do you convert 125 miles per hour to kilometers per second?
125 mph x 1.6093412 = 210.1677 km/hour
divide by 3600: = 0.0559 km/second.
The formula to convert miles to km
125 mi*
63360 in
1 mi
*
2.54 cm
1 in
*
1 km
100000 cm
=
201.168 km
How Can you tell from a velocity-time graph that the velocity is constant?
velocity is nothing but speed of a body in the given direction.
suppose if body is moving with constant velocity then VT graph will be parallel to
the X -axis, if not then the VT graph is not parallel to the X-axis it means then object is moving with different velocity or it has its dierection or both velocity and aswell as direction.
Can objects mechanical energy be equal to its gravitational potential energy?
Yes. Mechanical energy is the sum of potential energy and kinetic energy; this includes gravitational potential energy.
Momentum is mass multiplied by velocity. The formula for momentum is: p (momentum)= m (kg ) x v (meters/second). So in this case, the mass is 9000 kg and the velocity is 3 m/s, so its momentum is 27000 kg-m/s, or N-s.
The Suzuki GSX750F has a top speed of around 130-140 mph, depending on various factors such as rider weight, road conditions, and maintenance.
The bowling ball resting on the hot driveway will have more thermal energy due to absorbing heat from the hot surface for 4 hours. When the bowling ball rolls down the lane in the air-conditioned bowling alley, it will lose some of that thermal energy as it moves and interacts with the cooler indoor environment.
To convert feet per second (fps) to kilometers per hour (km/h), you can use the following conversion factor: 1 km/h =~ 0.27777778 m/s. Once you've converted fps to m/s, you can then convert m/s to km/h by multiplying by 3.6. Therefore, 360 fps is approximately equal to 389.5 km/h.
Mach 50 is a speed equivalent to 50 times the speed of sound or approximately 38,000 miles per hour (61,000 kilometers per hour) in Earth's atmosphere. It is an extremely high velocity that is typically associated with hypersonic speeds.
How long does it take to drive 922 miles at 75 miles per hour?
6800/45 = 151.11 hours
151.11 / 24 = 6.3 days
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Yes this would be the MINIMUM time and assumes that you did not have to stop to go to the toilet, eat, sleep or fill the vehicle up with petrol.
In reality a journey of that distance would take you 10 to 12 days.
How long to drive 135 miles at 50 mph?
It would take approximately 2.7 hours to drive 135 miles at a speed of 50 miles per hour. This is calculated by dividing the total distance by the speed.
Which is the greater energy the potential energy or kinetic energy?
Typically higher. Consider a gas. The air you breath is made up of billions of particles flying around all over the place. When the air is warm, these particles move faster than if the air was cold. In that sense, temperature is higher if kinetic energy is great.
What percent of fatal collisions occur on roads with posted speed litmus of 55 mph or more?
Around 47% of fatal collisions in the United States occur on roads with posted speed limits of 55 mph or more. These higher speed limits increase the risk of severe and fatal crashes due to the increased impact forces involved in high-speed collisions.
What 2 factors does the kinetic energy depend on?
It depends on mass and velocity.
ans :
it depends on the mass & speed of the moving object.
no, it depends on the work & energy.
How many minutes does it take to go 33 miles at 100 mph?
It would take approximately 19.8 minutes to travel 33 miles at a speed of 100 miles per hour. This calculation is done by dividing the distance by the speed (33 miles / 100 mph) and converting the result from hours to minutes.
Paul would be 97.5 miles away from home after driving for one and a half hours at 65 mph.
