new questions:
A horizontal force of 15N is applied to a 4.0kg block sitting on a level surface for which the coefficient of friction is 0.30. What is the acceleration of the block?
a. it remains stationary.
b. 0.75 m/s^2
c. 0.81 m/s^2
d. the block does not accelerate
a baseball bat exerts a force of +950N on a 150g ball with an 800g bat. At the moment of impact, what is the respective acceleration of the ball and bat ?
a. Ball = -1.19x10^3 ; Bat = +6.33x10^3
b. Ball = -6.33x10^3; bat = +1.19x10^3
c. Ball = +6.33x10^3; bat = -1.19x10^3
d. Ball = +1.19x10^3; bat = -6.33x10^3
if you could provide explanation as i need to provide proof that i know how to solve the answer. Thanks
