A dragster travels 1/4 mi in 6.7 s. Assuming that acceleration is constant and the dragster is initially at rest, what is its velocity when it crosses the finish line?

A roller coastre car rapidly picks up speed as it roles down a slope.  As it starts down the slope, its speed is 4 m/s.  But 3 seconds later, at the bottom of the slope, its speed is 22 m/s.  What is the average acceleration?

An object is moving east with a constant speed of 25 m/s for 5 seconds. What is the object's acceleration? O 125 m/s/s O 5 m/s/s O O m/s/s O 25 m/s/s 1 3. 4.

A car has an initial velocity of 17.8 m/s (SOUTH). The car has an unknown acceleration for a time of 7.11 seconds, at which point the car has a final velocity of 4.20 m/s (NORTH). During this time what is the car's displacement?

A car is traveling along a straight road at a velocity of +39.5 m/s when its engine cuts out. For the next 2.81 seconds, the car slows down, and its average acceleration is a,. For the next 5.65 seconds, the car slows down further, and its average acceleration is ₂. The velocity of the car at the end of the 8.46-second period is +28.6 m/s. The ratio of the average acceleration values is ā,/₂ = 1.78. Find the velocity of the car at the end of the initial 2.81-second interval. 2

A ball rolls along flat ground at 7.5 m/s (call this the positive direction) then encounters a hill. If the ball rolls 19 m up the hill before coming to a stop, what was the acceleration (in m/s2) experienced by the ball as it rolled up the hill?

A VW Beetle goes from 0 to 42.0 mi/h with an acceleration of +2.35 m/s2. (a) How much time does it take for the Beetle to reach this speed? (b) A top-fuel dragster can go from 0 to 42.0 mi/h in 0.750 s. Find the acceleration (in m/s2) of the dragster.

A rectangular painting measures 1.00 m tall and 1.50 m wide, Fig. a. It is hung on the side wall of a spaceship which is moving past the Earth at a speed of 0.90c. (a) What are the dimensions of the picture according to the captain of the spaceship? (b) What are thedimensions as seen by an observer on the Earth? (L=L0*√1 − (?)2 )

A rocket is launched from the ground such that its net acceleration is 15 m/sec2 when the engine is on. After 10 seconds, the engine cuts off. How high does the rocket go?

During takeoff a jet aircraft goes from 4.5 m/s to 60.0 m/s in 5.40 seconds. What would be the jet’s speed after 10.0 seconds if the acceleration is kept constant?