A driver in a 1500-kg car plows into a 1300-kg parked car. Police measurements show that the two cars skid a distance of 20 m before stopping. If the coefficient of kinetic friction is 0.75, how fast was the driver going just before the collision? Hint: this is a totally inelastic collision. 35.2 m/s 32.0 m/s 36.9 m/s 9.2 m/s 17.2 m/s

T3.29 Please help me answer this physics question.

A small (35 g) block is sliding toward the right along a table when it hits a larger (90 grams) block that was at rest. After the collision, the large block slides 72 cm to the right before coming to a rest, while the small block bounces off the large block, sliding 1.5 m to the left before stopping. The somewhat rough table has a coefficient of kinetic friction of 0.42. What is the velocity of the small block just before it hits the larger block?

A block of mass m1 = 13.5 kg slides along a horizontal surface (with friction, μk = 0.31) a distance d = 2.3 m before striking a second block of mass m2 = 8.5 kg. The first block has an initial velocity of v = 9.5 m/s. a)Assuming that block one stops after it collides with block two, what is block two's velocity after impact in m/s?  b) How far does block two travel, d2 in meters, before coming to rest after the collision?