A train is moving with a uniform velocity of (2 hat(i)- hat(j)+ hat(k)) ms^(-1). If the force required to overcome friction is (hat(i)- 3hat(j) + 2hat(k))N, the power of the engine is

A train is moving with a uniform velocity of (2 hat(i)- hat(j)+ hat(k)

1.	A train is moving with a uniform velocity of (2 hat(i)- hat(j)+ hat(k)) ms^(-1). If the force required to overcome friction is (hat(i)- 3hat(j) + 2hat(k))N, the power of the engine is
Answer» 7W 10W 13W 15W Answer :C