Question

A boy of mass 45-kg is on a moving ice sled A of mass 30-kg at...

A boy of mass 45-kg is on a moving ice sled A of mass 30-kg at a speed 10 m/s east on a frictionless frozen lake bed. He jumps off sled A with a relative speed 2.0 m/s east with respect to the sled and lands on another identical ice sled B at rest.

a) What is the speed of sled A after the boy jumps off it? What is the speed of the sled B after the boy lands on it?

b) If the system includes the boy plus two sleds, find the speed of center of the system before and after the boy lands on sled B.

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.) Your mass is 75.2 kg, and the sled s mass is 18.3 kg. The sled...
A.) Your mass is 75.2 kg, and the sled s mass is 18.3 kg. The sled is moving by itself on the ice at 4.15 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? B.) A block of mass 1.12 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 4.23 m/s. It eventually collides with a...
A.) This time, your mass is 67.1 kg and the sled s mass is 17.6 kg....
A.) This time, your mass is 67.1 kg and the sled s mass is 17.6 kg. You re on the sled, initially moving to the west at 9.32 cm/s. From the southern shore, your friend throws a baseball of mass 0.197 kg, which you catch as it s traveling northward with a horizontal velocity component of 32.1 m/s. What will be the sled s (and your) speed after catching the ball? Multiple choice 11.91 cm/s 9.40 cm/s 35.5 cm/s 9.53...
A.) You are sitting in a sled, at rest on a pond covered with nice, thick,...
A.) You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own mass is 90.1 kg, and the mass of the sled when empty is 19.1 kg. From shore, someone throws a baseball of mass 0.147 kg to you, and you catch it; the horizontal component of the ball s velocity is 30.8 m/s. What will be the sled s (and your) speed with respect to the surface of the pond after...
The figure shows two 24.3 kg ice sleds that are placed a short distance apart, one...
The figure shows two 24.3 kg ice sleds that are placed a short distance apart, one directly behind the other. A 3.90 kg cat initially standing on one sled jumps to the other one and then back to the first. Both jumps are made at a speed of 3.11 m/s relative to the ice. What are the final speeds of (a) the first sled and (b) the other sled?
Identical twins, each with mass 55 kg, are on ice skates and at rest on a...
Identical twins, each with mass 55 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack and she throws it horizontally at 3.8 m/s to Twin B. After throwing the backpack, twin A gains a velocity of 1.4. Neglecting any gravity effects, what are the subsequent speeds of Twin B in m/s.
Identical twins, each with mass 51 kg, are on ice skates and at rest on a...
Identical twins, each with mass 51 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack and she throws it horizontally at 2.6 m/s to Twin B. After throwing the backpack, twin A gains a velocity of 1.3. Neglecting any gravity effects, what are the subsequent speeds of Twin B in m/s.
A boy of mass 43.9 kg is initially on a skateboard of mass 2.00 kg, moving...
A boy of mass 43.9 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 11.1 m/s. Find the final velocity of the skateboard. magnitude:
5. A man of mass 70 kg and a boy of mass 35 kg are standing...
5. A man of mass 70 kg and a boy of mass 35 kg are standing together (not moving) on a smooth ice surface for which friction is negligible. They push each other apart and the man moves away with speed of 0.3 m/s relative to the ice. (a) What is their total momentum before pushing each other? (b) Find the velocity of the boy after pushing (c) Find the final kinetic energy of the man-boy system (= total kinetic...
A man holding a rock sits on a sled that is sliding across a frozen lake...
A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a speed of 0.490 m/s. The total mass of the sled, man, and rock is 97.5 kg. The mass of the rock is 0.320 kg and the man can throw it with a speed of 17.0 m/s. Both speeds are relative to the ground. Determine the speed of the sled in m/s if the man throws the rock forward (i.e. in...
A pair of figure skaters glide holding hands on a frictionless ice rink, at a speed...
A pair of figure skaters glide holding hands on a frictionless ice rink, at a speed of 3.0 m/s and heading due East in a straight line. They then push away from each other. Skater A, of mass 48 kg, glides off at a speed of 3.8 m/s and at angle of 29 degrees counterclockwise with respect to the original direction. Skater B has a mass of 72 kg. a. After they push off from each other, what is the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT