A particle moves along a straight line with equation of motion s = t^{5} - 2 t^{4} Find the value of t (other than 0) at which the acceleration is equal to zero.

The height of a helicopter above the ground is given by h = 2.65t3, where h is in meters and t is in seconds. at t = 1.55 s, the helicopter releases a small mailbag. how long after its release does the mailbag reach the ground?

A basketball player shoots toward a basket 5.3 m away and 3.0 m above the floor. If the ball is released 1.9 m above the floor at an angle of 60° above the horizontal, what must the initial speed be (in m/s) if it were to go through the basket?

Magnetism at the centre of a bar magnet is A. minimum B. maximum C. zero D. minimum or maximum

Which lenses are convex? Check all that apply. 1 2 3 4 5 6

What happens to molecules when their kinetic energy decreases?

What force is responsible for your sensation of weight?

Science fiction movies that include explosion sound effects for battles in space are not scientifically correct. Why is this? A. The sound from an explosion can only be transmitted by air. B.

What is the kinetic energy of a 1,900 kg car moving at 89 km/h?

Why do we study black holes

Calculate the kinetic energy of a charging elephant if its mass is 5,000kg and it moves at 8m/s