Question

a girl throws a ball weighing 250 gram vertically upwards with a speed of 5 metre per second what will be its initial momentum​

Answer 1

Answer:

1.25 kg.m/s

Explanation:

As per the provided information in the given question, we have :

• Mass of the ball (m) = 250 g
• Speed (v) = 5 m/s

We've been asked to calculate the initial momentum of the ball.

In order to calculate the the initial momentum of the ball, we should have initial velocity and mass of the ball. Here, the ball is thrown with the speed of 5m/s ; so the initial velocity of the ball is 5 m/s.

→ Initial velocity = 5 m/s

Also, the mass has been given which is 250 g. We've to convert it into kg first.

→ Mass = 250 g

→ Mass = (250 ÷ 1000) kg

→ Mass = 0.25 kg

Now, as we know that momentum of an object is defined as the product of mass and velocity. Thus it can be written as,

★ P = mv

• P denotes momentum
• m denotes mass
• v denotes velocity

Here,

→ P = 0.25 kg × 5 m/s

→ P = 1.25 kg.m/s

Therefore, its initial momentum of the ball is 1.25 kg.m/s.