A cricket ball has a mass of 0.14 kg. A bowler throws a 40 m/s ball which is hit by the batsman straight back at a speed of 46 m/s. a) What is the change in momentum of the ball during the collision with the bat?

b) If this collision occurs during a time of 0.012 seconds, what is the average force exerted by the bat on the ball?

The discovery of the electron as a subatomic particle was a result of

Describe cytokinesis in plants and animals. in animals: in plants.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.