A man of mass 80kg stands next to a stationary ball of mass 4kg on a frictionless surface. He kicks the ball forward along the surface with a speed 15m/s. Calculate the man's recoil speed

What is the acceleration of a car that moves at a steady velocity of 100km/h for 100s?

A Batsled of mass 10kg sits on a horizontal surface. Batman (30kg) runs with a velocity of 5m/s. He jumps onto the sled (assume a completely inelastic collision).

How does an airplane engine work?

Greyhounds can accelerate at 7 m/s2 at the start of a race. How much force does it take a 35 kg dog to produce this acceleration

A positively charged sphere with a charge of the of 8Q is separated from a negatively charged sphere - 2Q by a distance r. The spheres briefly touch each other and move to the original distance are.

What is a result when the torques on each side of the fulcrum are equal? no motion rotate counterclockwise about the fulcrum rotate clockwise about the fulcrum iIt will teeter clockwise and counterclockwise about the fulcrum

Suppose a 58-turn coil lies in the plane of the page in a uniform magnetic field that is directed out of the page. The coil originally has an area of 0.175 m2. It is stretched to have no area in 0.100 s.

A yummy glazed doughnut is shown above. 1) where is the center of mass of this fantastic culinary delight? in the center of the hole. somewhere inside the solid part of the doughnut the center of mass is not defined in cases where mass is missing.

10. Explain the difference between the short-term effects of concussions and some of the long-term effects that scientists are recently discovering.

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?