Question

#1 - A sled and rider with a combined weight of 72 kg are at rest...

#1 - A sled and rider with a combined weight of 72 kg are at rest on the top of a hill 21 m high.

(a) What is their total energy at the top of the hill?

__________J

(b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?

__________J

#2- A 31.6-kg child starting from rest slides down a water slide with a vertical height of 13.5 m. (Neglect friction.)

(a) What is the child's speed halfway down the slide's vertical distance?
__________m/s

(b) What is the child's speed three-fourths of the way down?
__________ m/s

#3- A man pushes a lawn mower on a level lawn with a force of 205 N. If 31% of this force is directed forward, how much power does he expend in pushing the mower 6.3 m in 17 s?
_____________W

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

kindly please upvote this

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 sled and rider with a combined weight of 69 kg are at rest on the...
A sled and rider with a combined weight of 69 kg are at rest on the top of a hill 15 m high. (a) What is their total energy at the top of the hill? (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?
Gayle runs at a speed of 4.60 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 4.60 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 18.0 m? Gayle's mass is 50.0 kg, the sled has a...
Gayle runs at a speed of 3.40 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 3.40 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 50.5 kg, the sled has a mass...
Gayle runs at a speed of 4.20 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 4.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 52.0 kg, the sled has a mass...
Gayle runs at a speed of 2.75 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 2.75 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 8.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 33.0 kg, the sled has a mass...
Gayle runs at a speed of 4.25 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 4.25 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.4 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. Gayle's mass is 45 kg, the sled has a mass of 5 kg, and her brother has a mass of 30 kg. What is the speed of...
Bob is pushing a 25.00 kg sled up a 20.00° slope starting from rest. If he...
Bob is pushing a 25.00 kg sled up a 20.00° slope starting from rest. If he pushes with an average force of 90.00 N for 3.00 m up the slope, how fast will the sled be moving (ignoring friction and air resistance)?
Gayle runs at a speed of 4.32 m/s and dives on a sled, which is initially...
Gayle runs at a speed of 4.32 m/s and dives on a sled, which is initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.26 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 45.4 kg, the sled has...
a child sleds down a 7.5m tall hill. the combined mass of the child and sled...
a child sleds down a 7.5m tall hill. the combined mass of the child and sled is 55.0kg. while sliding down the hill they encounter a 5.5m long rough patch of snow that exerts a friction force of 100N. if they had a speed of 1.4m/s at the top of the hill, what is their speed at the bottom of the hill? please be descriptive!!!
You are sliding down a hill on a sled. You and the sled together are 60...
You are sliding down a hill on a sled. You and the sled together are 60 kg. The hill is 36 m long and is 10 m in height. on the surface just before the hill the sled is moving 6 m/s. when the sled reaches the bottom of the hill, it is moving at 12 m/s. (a). how much work was done by friction? (b) what is the magnitude of the frictional force? (c) what is the coefficient of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT