Work And Energy Test

Result

Work And Energy Test - 3

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

A truck and a car moving with the same K.E. are brought to rest by the application of brakes which provides equal retarding forces. Which of them will come to rest in a shorter distance?

A
The truck

B
The car

C
Both will travel the same distance before coming to rest

D
The distance of travel will depend on the horsepower of the vehicles

Solution

As the truck and the car have the same initial kinetic energies, the brakes have to do the same amount of work to expend this energy away, mainly in the form of heat. As the retarding force on both is the same, and also the work is force multiplied by the distance, both will travel the same distance.
Question 2
1 / -0

The PE of a simple pendulum is the highest, when it is

A
at the turning points of the oscillation

B
at the equilibrium

C
in between the above two cases

D
at any position, it has always a fixed value

Solution

Potential energy is maximum at the ends or turning points of the oscillation.