A car weighing 40 tons is switched 2% upgrade with a velocity of 30 mph. If the car is allowed to run back what velocity will it have at the foot of the grade?

Which object will have greater kinetic energy? a) An object with 2 kg mass and 4 m/sec velocity. b) An object with 4 kg mass and 2 m/sec velocity

If the velocity is positive then which would most likely yield a negative acceleration?

1. An initial velocity that is lower than the final velocity

2. Higher velocity in the middle of the journey

3. An infinite value of time

4. A final velocity that is lower than the initial velocity

A uniform rod is rotating on a horizontal plane about a vertical axis through one end with a constant angular velocity ω0. Due to internal shear forces, the rod breaks at the mid-point of its length, and the part with the fixed axis has an angular velocity 1.5ω0 in the same sense. Determine the angular velocity of the other half.