Abowling ball of mass 9.5kg and diameter 14cm rolls without slipping down a 6-m bowling lane with a constant speed 5.6 m/s. a) through what angle does the bowling ball turn as it travels the length of the lane.
b) what is the speed of the bowling ball?
c) calculate the maximum radial acceleration that a point on the surface of the bowling ball could have.
d) calculate the tangential acceleration of a point on the surface of the bowling ball.

we need to know the time interval during which the force acts. impulse of force = momentum change

lol

explanation:

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me