A boy (30 kg) sitting on his horse whips it. The horse speeds up at an – McqOptions

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1.	A boy (30 kg) sitting on his horse whips it. The horse speeds up at an average acceleration of 2.0 m/s 2.If the boy does not slide back, what is the force of friction exerted by the horse on the boy ?
A.	20 N
B.	30 N
C.	40 N
D.	60 N
Answer» E.

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