CHANGE IN SPEED

STATEMENT - 1 : A ball of mass m is moving towards a batsman at a speed v. The batsman strikes the ball and deflects it by an angle theta without changing its speed. The impulse imparted to the ball is zero. because STATEMENT - 2 : Impulse = change in momentum.

Change the speed of 6 m/s into km/h.

Assertion :– As light travels from one medium to another, the speed of light change. Reason :– Speed is the characteristic of medium so it will change.

A body of mass M moving with a speed V collides on a surface at an angle 45 degree without changing its speed the change in momentum of the body will be-

Explain with an example force can change the speed of an object. How does second law of newton supports it?

Assertion :- A particle has positive acceleration it means that its speed always increases. Reason :- Acceleration is the rate of change of speed with respect to time.

A moter car is going due northat a speed of 50 km/h. It makes a 90^0 left turn without changing the speed. The change in the velocity of the car is aout