Brittany is changing the tire of her car on a steep hill 25.0 m high. She trips and drops the 12.0-kg spare tire, which rolls down the hill with an initial speed of 2.50 m/ s. What is the speed of the tire at the top of the next hill, which is 6.00 m high? (Ignore the effects of rotation KE and friction.) * a. 1.97 m/s
b. 19.7 m/s
c. 25.0 m/s
d. 250. m/s

Ajogger accelerates from rest to 4.86 m/s in 2.43 s. a car accelerates from 20.6 to 32.7 m/s also in 2.43 s. (a) find the magnitude of the acceleration of the jogger. (b) determine the magnitude of the acceleration of the car. (c) how much further does the car travel than the jogger during the 2.43 s?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Can you match these to the correct definition