A man takes an interest free loan of Rs. 1740 from his friend agreeing to repay in monthly installments. he gives Rs. 200 in the first months and diminishes his monthly installments by Rs. 10 each month. how many months will it take to repay the loan?​

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?