Abaseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. the duration of the collision is 8.0×10−3 seconds. the ball moves off with a speed of 50 meters/second in the opposite direction. what is the value of the force?
a. 1.8×102 newtons
b. 1.2×102 newtons
c. 1.3×103 newtons
d. 1.4×103 newtons

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around

Emagnitude of the electrical force acting between a +2.4 ×  10–8  c charge and a +1.8 ×  10–6  c charge that are separated by 0.008 m is    n, rounded to the tenths place.

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2