MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11
        If momentum of  lighter and heavier body is same then what change in kinetic energy.
10 months ago

Answers : (2)

Mahima Kanawat
826 Points
							Dear student ,KE = p^2/2mIf momentum (p) is same then KE is inversely proportional to mass Therefore , KE of lighter mass will be more With regards MahimaAskiitians forum
						
10 months ago
Arun
16191 Points
							

The formula for momentum of a body is

P= MV

Now let the mass and velocity of the heavy body be M and V respectively. The mass and velocity of the of the lighter object be m and respectively.

So , P/P= MV/mv

Since the momentum(p)is same we get,

MV=mv

M/m= v/V[1]

The formula for kinetic energy is,

KE = 1/2mv^2. Let the KE of the heavier body be KE1 and KE of the lighter object be KE2.

So, KE1/KE2= 1/2MV^2÷1/2mv^2

= MV^2/mv^2

= M/m× V^2/v^2

= v/V × V^2/v^2 [ from 1]

= V/v

So, KE1/KE2= V /v

Now, as the velocity of the lighter object is greater, since its mass is less, the kinetic energy of the lighter object will be greater.

Another explanation could be, kinetic energy is the energy possessed by a body due to its motion, so the body with more velocity will have greater kinetic energy.

10 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 1,590 off

COUPON CODE: SELF10


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 1,590 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details