True or false? When two objects interact, both force and motion are caused.
1 answer:
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Answer:
a.
b. 21.64 m/s
Explanation:
Let g = 9.81m/s2
a. The weight of the block is product of its mass and gravitational acceleration
which is also the normal force acting on the block from the floor so it stays balanced.
N = 71.225N
The static friction of the block is product of its normal force from the floor and the friction coefficient
For the block to move, the force generated by the impact must be at least equal to the static friction.
The impulse is product of this force and time duration of impact.
As impulse is generated by change in momentum of the ball, which is product of its mass and velocity v
b.