Ball A of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after impact would be___.

Civil Engineering : Applied Mechanics - Quiz(MCQ)

zero

5 m/sec

10 m/sec

None of the Above

Correct Answer : 10 m/sec

Recently Updated in Applied Mechanics Questions

A geo-stationary satellite is one which orbits the earth with a velocity of rotation of____.

earth

sun

moon

None of the Above

Correct Answer : Option (A) : earth

If two equal forces of magnitude P act at an angle Î¸, their resultant, will be____.

P sin Î¸/2

P cos Î¸/2

2P sin Î¸/2

2P cos Î¸/2

Correct Answer : Option (D) : 2P cos Î¸/2

Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by___.

4.5 kg

5.5 kg

6.25 kg

8.75 kg

Correct Answer : Option (D) : 8.75 kg