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 12 m/s after being in contact with the bat for 2.0 ms . assume constant acceleration during the hit.

Question is missing. Found on google:

"Part A What is the acceleration of the ball? Express your answer to two significant figures and include the appropriate units.

Part B

What is the net force on the ball during the hit?  

Express your answer to two significant figures and include the appropriate units."

Solution:

A)

The acceleration of the ball is given by

where

v = 12 m/s is the final velocity

u = 0 is the initial velocity (the ball is stationary)

t = 2.0 ms = 0.002 s is the time of contact

Substituting,

B)

The force on the ball can be found by using Newton's second law:

where

m = 140 g = 0.14 kg is the mass of the ball

is the acceleration

Substituting,

i think the answer would be b

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.