Acceleration is change of speed per unit of time Our car's change of speed is 60-0 = 60 mph Aceeleration is 60*3600/5.4 miles/hour squared = 40000 miles/hour squared Alternatively: 60 mph = 88 feet/sec Change of speed = 88-0 feet/sec Acceleration = 88/5.4 = 16.30 ft/sec sq.
To solve this, you can use the following constant acceleration equation:
Δx = vit + 1/2at2
where Δx is the change in position, vi is the initial velocity, t is the time interval, and a is the acceleration.
To solve, simply plug in the given values.
Δx = (4.0 m/s)(5.0s) + 1/2(3.5 m/s2)(5.0s)2
Δx = 64 m
s = v(o)t + 0.5 at2 ... a = (v(f)- v(o)) /t .... v(o) = 0
v(f) = 60 miles/hr x 3600 s / 5280 ft = 450/11 ft/sec
a = (450/11)/6.8 =6.016 ft/sec2
s = 0x6.8 + 0.5x(6.016)x(6.8)2 = 139.1 feet
Average speed during the 4 seconds = 1/2 (0 + 60) = 30 mph
Distance traveled = (average speed) x (time) =
(30 mi/hr) x (4 seconds) x (5,280 ft/mi)/(3,600 sec/hr) = 176 feet
That's about 35 mph. That's pretty poor. Any decent car can to 60mph in about 9 or 10 seconds.
8
No. The amplitude of the sound (and therefore its loudness) will decrease at greater distances; the speed will remain constant (assuming other factors, such as the density of air and the temperature, are constant).
You can only know the distance for sure if acceleration or deceleration is constant. Add the start and end velocities and divide by two and then multiply by the time to get your distance.
formula for speed is distance traveled over time taken to cover distance acceleration is given by change in velocity per unit time
Final velocity = Initial velocity +(acceleration * time)
Any curved line will indicate a change in acceleration. Straight lines with slope indicate a steady velocity and straight lines with zero slope indicate a lack of motion.If the X axis (left to right) is for time and the Y axis (up and down) is for speed, it would curve up.
Assuming constant acceleration: distance = v(0) t + (1/2) a t squared Where v(0) is the initial velocity.
There is not enough information to answer the question. The answer depends onis the object travelling at constant velocity?is the acceleration constant?If it is an object travelling with constant acceleration, which three of the following four variables are knows: initaial velocity, final velocity, acceleration and time.
d = 1/2 a t2 where d is distance traveled a is the constant acceleration t is the time You can calculate the value of "a" by dividing "v" by "t".
If the car begins with zero speed, thenDistance = 1/2 (acceleration) x (time)2
If an object is traveling at a constant velocity, its acceleration is 0. Even if it traveled for 2 years.
Formula for distance traveled with constant acceleration is: S = v0t + at2 / 2. Knowing the distance, time and that initial velocity is zero: S = at2 / 2, a = 2S / t2, or numerically: a = 804 / 36 = 22.33 m/s2 Expressing that in terms of g(=9.81 m/s2): a = 2.28 g
because top hat
No. Acceleration is the rate at which the speed is INCREASING. Since the speed is increasing,the distance traveled by the body in each time interval is also increasing.
It depends on the rate of acceleration. A top fuel dragster can accelerate at 160 ft/s2. That means it can hit 30 mph (44 ft/s) in about 0.3 seconds. From a standing start, assuming constant acceleration, it will have traveled only about 20 feet. Your mileage may vary.
No. The amplitude of the sound (and therefore its loudness) will decrease at greater distances; the speed will remain constant (assuming other factors, such as the density of air and the temperature, are constant).
315
Acceleration=Speed1-speed2/Distance traveled