Question

The impulse of an object is 1 a. the product of (the peak force applied to an object) x (time interval during which the force acts). 2 b. the product of (the average force applied to an object) x (time interval during which the force acts). 3 c. the average force applied to an object for a period of 1 sec. 4 d. the peak force applied to an object for a period of 1 sec. 5 e. the total mechanical energy of the object.

Answer 1

o The impulse of an object is :- Answer: option (2) b. The product of (the average force applied to an object) x ( time interval during which force acts) Соле. 1 F = - mxa a= F m Case I 6F = (2m) x a ya= 6E = 3F 2 m m a = 3a from ① answer (6) 3a 3 Instantaneous velocity of sattelite: - answer (b) has constant magnitude but is always directed tangent to the circle. We know, KE = mv² then, va 2 KE m 2x7.2 x 105 = 28.3 m/s 1800 .. V= 28 m/s answer. – (C) 28 m/s Ismax UN N fs, max : max = 0.5 x 10 = 5N Nang = ION f ing F = 2N Kfs, max) frictional force acting = 2N answer (62N