A 69 kg parent and a 16 kg child meet at the center of an ice rink. They place t

Question

A 69 kg parent and a 16 kg child meet at the center of an ice rink. They place their hands together and push.

a) Is the force experienced by the parent more than, less than, or the same as the force experienced by the child?

b) Is the acceleration of the parent more than, less than, or the same as the acceleration of the child?

c) in a couple sentences exlain why this happens?

d) If the magnitude of the child's acceleration is 2.6 m/s2 in magnitude, what is the magnitude of the parent's acceleration?

Explanation / Answer

a)

The force is the same (Newton's third law)

b.

Accleration of the parent is less because

c)

a= force / mass

When the mass is higher acceleration becoms less

d)

F=ma.

Therefore F=16 kg x 2.6m/s^2=41.6 N

The force acting the parent is also 41.6 N due to newton's third law.

Hence 41.6 N =69 kg x acceleration

Acceleration=0.6028 m/s^2

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