In t-ball, young players use a bat to hit a stationary ball off a stand. the 140 g ball has about the same mass as a baseball, but it is larger and softer. in one hit, the ball leaves the bat at 12m/s after being in contact with the bat for 2.0ms . assume constant acceleration during the hit.
a. what is the acceleration of the ball? express your answer to two significant figures and include the appropriate units. a =
b. what is the net force on the ball during the hit?
express your answer to two significant figures and include the appropriate units.
f =

Explanation:

It is given that,

Mass of the ball, m = 140 g = 0.14 kg

Initial speed of the ball, u = 0

Final speed of the ball, v = 12 m/s

Time of contact,

(a) Let a is the acceleration of the ball. It is equal to the rate of change of velocity. It is given by :

(b) Let F is the net force on the ball during the hit. It is equal to the product of mass and acceleration. It is given by :

F = 840 N

Hence, this is the required solution.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg