Calculate the velocity of the car at the end of the ramp just before it starts its horizontal path to its stopping point. PE = KE = (1/2) m v^2

I need steps to solve this in order to understand

An unwary football player collides head-on with a padded goalpost while running at 7.2 m/s and comes to a full stop after compressing the padding and his body by 0.28 m. Take the direction of the player’s initial velocity as positive Assuming constant acceleration, calculate his acceleration during the collision, in meters per second squared.    How long does the collision last in seconds?

A cyclist accelerates at a constant rate of 2.88 m/s2 for 2.82 s. If their final velocity is 12.6 m/s, what was their initial velocity? Give your answer in m/s to 2 decimal places, but do not include units in your answer.

The jet car is originally traveling at a velocity of 10 m/s when it is subjected to the acceleration shown. When -0.s=0 Supposie that a, =45 m/s. a=35 m/s and t"= 12 s. (Flgure 1) Determine the car's maximum velocity Express your answer to three significant figures and include the appropriate units. Value Units Figure <1 of 1 Submit RenstAnnwer e (m/) Part B Detemine he timo t when the car stops Express your answer to three significant figures and include the appropriate units. t's Value Unts Submit BesustAnswe

High-speed motion pictures (3500 frames/second) of a jumping 230 μg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure ( Figure 1). (See "The Flying Leap of the Flea," by M. Rothschild et al. in the November 1973 Scientific American.) This flea was about 2 mm long and jumped at a nearly vertical takeoff angle. Use the measurements shown on the graph to answer the questions. Figure alg 150 100 50 0 0 0.5 1.0 1.5 Part E Use the graph to find the flea's maximum speed. Express your answer in meters per second to two significant figures. IVE] ΑΣΦ 3 v=1.6 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 2 attempts remaining m/s

When you drive to work on a winding road, the odometer of your car changes from 27120 km to 27140 km in 30 minutes. The car's average speed was exactly 40 km/hr. The magitude of the car's average velocity was: -more than 40 km/hr or -less than 40 knm/hr

A runner in a 5.0km trail race reaches the finish line in 33.5 minutes. What was the runners average velocity (in km/hr) if the straightline distance from start to finish is 3.49km