tex]...

Questions

August 2022 1 18 Report

This question is specifically for @JashylolPH. I need good answers.

Give the Given and the Solution to the problems.

1. What is the momentum of a 220 kg tricycle traveling in [tex]{12{\frac{m}{s}}}[/tex] to the right?
2. A tennis player hits an approaching ball with a force of 750 N. If she hits the ball in 0.002 s, how much impulse is imparted to the tennis ball?
3. What is the velocity of a collision if a railway train with a mass of 6000 kg is moving to the right at 2.0 [tex]{12{\frac{m}{s}}}[/tex] and collides with an empty freight train with a mass of 3000 kg which ia moving to the left on the same track at 3.0 [tex]{12{\frac{m}{s}}}[/tex]

[tex]{\huge{\boxed{\boxed{\red{\bm{\mathsf{Thank\:You}}}}}}}[/tex]

Answers & Comments

JashylolPH

${\huge{\boxed{\boxed{\mathsf{Answer}}}}}$

1. 2640 kg $\frac{m}{s}$

Solution:

The Problem is based on finding the momentum of a tricycle that is traveling in 12 $\frac{m}{s}$ to the right.

Okay, so the given are it's mass and velocity:

$m$ = 220 kg

$v$ = 12 $\frac{m}{s}$

To find the $m$ of the Tricycle:

$m$ x $v$ = 220 x 12

= 2640 kg $\frac{m}{s}$

Hence, The Momentum of the Tricycle is 2640 kg $\frac{m}{s}$ .

2. 1.5 N.S

Solution:

This problem is based on finding the Impulse of a tennis ball. Impluse is a momentum of a solid object caused by an outside force that usually acts upon it.

In order to solve this problem, Find the Given.

The Given are:

$f$ = 750 N

$t$ = 0.002 s

$i$ = (Missing)

Formula:

$i = ft$

750 N * 0.002s = 1.5 N.S

Hence, The Impulse is 1.5 N.S

3. 2.66 $\frac{m}{s}$

Explanation:

The net force acting on the two railway cars is zero. So, the system is isolated.The direction to the right is the positive direction. The momentum P has the same direction of the velocity.

Then, V01 and V02 are positive.

When the two railways collide, the momentum (p) is conserved or remains the same.

Solution:

$vf$ = $[(3000 x 2.0) + (6000 x 3.0)] / 9000$