Motion in a Straight Line — Physics STD 11 Science — Question

Is potential energy on the surface of earth always zero?

What happens when two identical objects moving in mutually opposite directions suffer an elastic collision?

Why are we not able to rotate a wheel by pulling or pushing along its radius?

Why are gas thermometers more sensitive than mercury thermometers?

Why is it not necessary for a body following another to stop, to avoid collision?

Ten identical balls are placed in contact on a smooth surface. If an eleventh identical ball moving with a speed 'u' collides on the first, what will you notice?

Energy possessed by a body by virtue of its position or configuration is known as ­________.

Name the weakest and strongest force in nature.

What is the number of degrees of freedom of a molecule of a diatomic gas at room temperature?

Why do fire fighters have a jet attached to the head of their water pipes?