Two objects with identical masses, m1 and m2, have an elastic collision. The initial velocity of m1 is +20 m/s and of m2 is +9.0 m/s. After the collision, what will be the velocity of m1?

A1,200 kg car is accelerated at 3.7 m/s2. what force was needed to produce this acceleration? a. 4,440 n b. 324.3 n c. 4,388 n d. 304.3 n

True or false: the revolution of the earth creates day and night as it rotates around the sun

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j