Question

1. A horizontal moving walkway is moving at 3 m/s. On the average, during each second,...

1. A horizontal moving walkway is moving at 3 m/s. On the average, during each second, four stationary people step onto it and four people step off it. Assuming each person’s mass is 60 kg, what average driving force must be exerted on the walkway to keep it moving? (Ans: 720 N)

2. Blocks A and B are moving toward each other along the x-axis. A has a mass of 2.0 kg and a velocity of 50 [m/s], while B has a mass of 4.0 kg and a velocity of –25 m/s. They suffer an elastic collision and move off along the x-axis. Calculate the kinetic energy transferred from A to B during the collision. (Ans: 0)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

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) A block of mass m1=6.0 kg is initially moving at 5.0 m/s to the right...
A) A block of mass m1=6.0 kg is initially moving at 5.0 m/s to the right and collides inelastically with an initially stationary block of mass m2=18.0 kg. The two objects become stuck together. Find the final velocity of the two blocks. B) A block of mass m1=6.0 kg is initially moving at 5.0 m/s to the right and collides elastically with an initially stationary block of mass m2=18.0 kg. After the collision, block m2 is moving to the right...
A 20 kg block is moving to the right at 15 m/s along a horizontal frictionless...
A 20 kg block is moving to the right at 15 m/s along a horizontal frictionless road when it collides with a 40 kg block moving to the right at 5 m/s. After the collision, the 20 kg mass is moving to the right at 12 m/s. Find the velocity of the 40 kg mass after the collision.
A 1-kg particle moving with 14 m/sm/s   in the positive x-axis direction makes a head-on elastic...
A 1-kg particle moving with 14 m/sm/s   in the positive x-axis direction makes a head-on elastic collision with a stationary 3-kg particle. After collision, the two particles rebound along the x-axis. What is the final velocity of the 1-kg particle?
A block of mass m1 = 1.20 kg moving at v1 = 1.20 m/s undergoes a...
A block of mass m1 = 1.20 kg moving at v1 = 1.20 m/s undergoes a completely inelastic collision with a stationary block of mass m2 = 0.500 kg . The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3 = 2.60 kg , which is initially at rest. The three blocks then move, stuck together, with speed v3. Assume that the blocks slide without...
Question1) A car moving North at 12 m/s strikes a stationary car of equal mass. The...
Question1) A car moving North at 12 m/s strikes a stationary car of equal mass. The first car moves off after the collision at an angle of 30° East of North with a speed of 8.0 m/s. a.   What is the velocity of the struck car just after the collision? b.   Show that the collision is inelastic. c.   Explain how dents, skid marks, etc. show that kinetic energy has been lost. d.   If the collision were perfectly elastic, what would...
Consider object-1 of mass m1=652gram moving on the +X axis with the velocity of v1=13.5 m/s....
Consider object-1 of mass m1=652gram moving on the +X axis with the velocity of v1=13.5 m/s. Object-1 collide with stationary object-2 of mass m2=846gram on the X-axis. After collision, both objects are moving X-axis. a) Consider the collision is inelastic, and two objects combined into one object after the collision. Find the velocity of the combined object after collision? Consider the collision remains about 1.82ms. find the impulse acts on object-1 during the collision . Find the energy lost due...
A car of mass m = 1100 kg, moving with a velocity of 22.0 m/s, skidded...
A car of mass m = 1100 kg, moving with a velocity of 22.0 m/s, skidded off the road hitting a tree that brought the car to rest in 2.0 s. Determine (a) the impulse J imparted to the tree. (b) the average force that acted on the tree during collision.
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 ball of mass 2 kg is moving with a velocity of 12 m/s collides with...
A ball of mass 2 kg is moving with a velocity of 12 m/s collides with a stationary ball of mass 6 kg and comes to rest. calculate the velocity of the 6 kg ball after the collision. (both balls are elastic)
Consider m1=782 grams cart is moving on horizontal surface (+x axis) with an speed of 13.5...
Consider m1=782 grams cart is moving on horizontal surface (+x axis) with an speed of 13.5 m/s. An object with m2=0.250 kg is suddenly dropped (initially moving on -y axis) into the moving cart and combined (cart + object) moving as a single object with different velocity after collision. There is no ay external force or mass lose during the collision. a) Calculate the speed cart+object system (after collision)? b) Calculate total energy lost during the collision? c) Find the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT