if an object is moving at a constant speed, the forces acting on it must be ___. Another way to say this is that the net force =
1 answer:
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Answer:
towards right
towards left
Explanation:
= Mass of skater = 56 kg
= Mass of ball = 5 kg
v = Final velocity of ball = 7 m/s
u = Initial velocity of ball = 0
s = Distance the ball moved in the hand of the skater = 1 m
Moving left is considered and moving right is considered positive.
From kinematic equations of motion we have
So, the ball will move towards right with a magnitude of acceleration .
The force on the ball will be
The force on the ball is
The reaction force on the skater will be equal to the force on the ball but will have opposite direction.
So, the skater will move towards left with a magnitude of acceleration