NEET Class neet Answered
The momentum of a body of mass 5kg is 10 kg m/s. A force of 2 N acts on the body in the direction of motion for 5 sec, the increase in kinetic energy is:
Asked by jadhaovishal636 | 06 Dec, 2020, 08:37: AM
Expert Answer
Mass = m = 5 kg
Momentum = mv = 10 kg
velocity v = momentum / mass = 10/5 = 2 m/s
Applied force F = 2 N
acceleration a = force / mass = 2 / 5 = 0.4 ms-2
Change in speed after 5 seconds = v = vo + a t = 2 + ( 0.4 × 5 ) = 4 m/s
where vo is initial velocity
Change in kinetic energy = (1/2) m [ vf2 - vi2 ] = 0.5 × 5 × [ 42 - 2 2 ] = 30 J
where vf is final velocity and vi is initial velocity
Answered by Thiyagarajan K | 06 Dec, 2020, 11:11: AM
Application Videos
NEET neet - Physics
Asked by bidyutpravarout79 | 26 Apr, 2024, 09:40: PM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by ramanjaneyuluoguru | 25 Apr, 2024, 04:18: PM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by shatakshibhatt9 | 20 Apr, 2024, 07:52: PM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by praveenpriya000079 | 18 Apr, 2024, 07:24: AM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by gouranshi84 | 17 Apr, 2024, 05:23: PM
ANSWERED BY EXPERT
NEET neet - Physics
Asked by sojusvi | 17 Apr, 2024, 01:12: PM
ANSWERED BY EXPERT