A500-kg elevator is raised to a height of 10m in 10 seconds. calculate the power of the motor

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

The law of reflection states that the angle of reflection is equal to the angle of