Question

A running back with a mass of 76 kg and a velocity of 5 m/s (toward...

A running back with a mass of 76 kg and a velocity of 5 m/s (toward the right) collides with, and is held by, a 114-kg defensive tackle going in the opposite direction (toward the left). What is the velocity of the tackle before the collision for their velocity afterward to be zero? (Remember, velocity is a vector)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

since no external force is acting so linear momentum will be conserved.

so linear momentum before strike= linear momentum after strike

here

so we will get  

- sign means 2nd body is moving in left direction before the impact.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A ball with mass of 0.025 kg is thrown horizontally with velocity of 1.5 m/s toward...
A ball with mass of 0.025 kg is thrown horizontally with velocity of 1.5 m/s toward a wall in positive X direction. It collides with the wall, then bounces back to the left with velocity of 1.0 m. The Collison takes 0.015s. What is the total initial momentum? b) What is the total final momentum? c)What is change in momentum? d)What is the impulse? e) What is the average force acting on the wall by the ball during the collision?...
Mass A (8.5 kg) slides across a frictionless surface with a velocity of 6 m/s in...
Mass A (8.5 kg) slides across a frictionless surface with a velocity of 6 m/s in the positive direction. Mass B (8.5 kg) slides across the same surface in the opposite direction with a velocity of ?12 m/s. The two objects collide and stick together after the collision. Calculate the center-of-mass velocity (in m/s) of the system both before and after the collision. (Indicate the direction with the sign of your answer.)
A 2.50 kg mass moving 7.50 m/s to the right collides head on with a 4.90...
A 2.50 kg mass moving 7.50 m/s to the right collides head on with a 4.90 kg mass. After the collision the 2.50 kg mass is moving 5.00 m/s to the left and the 4.90 kg mass is moving 4.88 m/s to the right. a. Calculate the velocity of the 4.90 kg mass before the collision b. If the collision lasts for 0.0625 seconds calculate the force that acted on each mass during the collision.
A puck with a mass of 1.2 kg moves with a velocity of 5 m/s in...
A puck with a mass of 1.2 kg moves with a velocity of 5 m/s in the x-direction. It collides with a 1.6 kg puck which is initally stationary. After the collision, the second puck moves at a velocity of 1.44 m/s at an angle of 33 degrees below the x axis. A) What is the angle of the first puck after the collision? B)What is the velocity of the first puck after the collision?
1. A spaceship with mass 1000kg is floating at rest in space. It ejects 30kg of...
1. A spaceship with mass 1000kg is floating at rest in space. It ejects 30kg of gas at 20m/s. What is the resulting speed of the spaceship? 2. A 136 kg defensive lineman is about to tackle a 100 kg quarterback. Right before impact, the lineman is moving at 6.0 m/s (positive direction) and the the quarterback is moving at 1.0 m/s in the opposite direction (negative direction). Determine the speed and direction of the two players immediately after the...
A box A of mass 4.0 kg is moving toward the right at a speed of...
A box A of mass 4.0 kg is moving toward the right at a speed of 30.0 m/s on a frictionless horizontal surface, and another box B of mass 5.0 kg is sitting stationary to the left of box A. Box A collides with Box B. (a) Suppose they bounce off each other. The collision is elastic. What are the final speeds of the two boxes, and which direction is each going in now? (b) Suppose they stick together because...
On a frictionless, horizontal air table, puck A (with mass 0.250 kg ) is moving toward...
On a frictionless, horizontal air table, puck A (with mass 0.250 kg ) is moving toward puck B (with mass 0.400 kg ) A -After the collision, puck A has a velocity of 0.150 m/s to the left, and puck B has velocity 0.750 m/s to the right. What was the speed of puck A before the collision? B- If the two pucks collide and stick together with a final velocity of 0.6000 m/s to the right, what was the...
A 89.5-kg fullback running east with a speed of 5.05 m/s is tackled by a 95.5-kg...
A 89.5-kg fullback running east with a speed of 5.05 m/s is tackled by a 95.5-kg opponent running north with a speed of 3.10 m/s. (a) Explain why the successful tackle constitutes a perfectly inelastic collision. (b) Calculate the velocity of the players immediately after the tackle (I HAVE THE ANSWER TO B) magnitude: 2.91 ?direction: 33.25 m/s north of east (c) Determine the mechanical energy that disappears as a result of the collision. J Account for the missing energy....
1. A 50.5 kg quarterback is running with a football downfield at a speed of 2...
1. A 50.5 kg quarterback is running with a football downfield at a speed of 2 m/s and is tackled by another player with a mass of 70 kg running toward him at 4 m/s. When the tackler grabs the quarterback, they both fall backward at the same speed of 1 m/s (opposite to the original direction of the quarterback). In the process, the 0.5 kg football comes loose at the moment the collision takes place. a) Calculate the velocity...
A 0.15 kg baseball collides with a 1.0 kg bat. The ball has a velocity of...
A 0.15 kg baseball collides with a 1.0 kg bat. The ball has a velocity of 40 m/s immediately before the collision. The center of mass of the bat also has a velocity of 40 m/s, but in the opposite direction, just before the collision. The coefficient of restitution between the bat and the ball is 0.50. Estimate how fast the baseball is moving as it leaves the bat following the collision.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT