Log In Start studying!
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q. 3

Expert-verified
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 227

Answers without the blur.

Just sign up for free and you're in.

Illustration

Short Answer

A mother has four times the mass of her young son. Both are running with the same kinetic energy. What is the ratio vson /vmother of their speeds?

The ratio of speed is vson /vmother = 2:1

See the step by step solution

Step by Step Solution

Step1: Given information

A mother has four times the mass of her young son.

Both are running with the same kinetic energy

Step2: Explanation

The kinetic energy is calculated by

KE = 1/2(mv2) .....................................(1)

Use equation (1) to calculate the kinetic energy of son and mother and find the ratio

Lets assume

Suppose K . Eson is the kinetic energy for son and

K . Emother is the kinetic energy for mother and it is given that both have same kinetic energy

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.