Answer:
Option (a)
Explanation:
Given that,
Mass of a car, m = 1200 kg
Force exerted by the engine, F = 600 N
Noe force,F = ma
a is the acceleration of the engine
So, the acceleration of the car is 0.5 m/s².
Two football players each applied 100 n of force to sack the qb and move him 3 meters downfield. How much work was done?
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.