Question1
A 6.8 g lead bullet travelling at 520 m/s is stopped by a large tree. If half kinetic energy of the bullet is transformed into internal energy and remains with the bullet as the other half is transmitted to the tree, what is enhancement in temperature of the bullet?
Question2
A tapered, pressurized tank for a rocket contains 0.250 m3 of kerosene that has a mass of 205 kg. The pressure at the top of the kerosene is 2.01 x 105 Pa. The pressure force of 18.0 kN on the tank s bottom, which has an area of 0.0800 m2. Find out the depth of the kerosene.
Question3
After a day of testing race cars, you decide to take your own 1590 kg car onto the test track. While moving down the track at 10.0 m/s, you uniformly accelerate to 26.0 m/s in 10 s. What is an average net force that you have applied to car during the 10 s interval?