Gaurishaknar

University M

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wrote the 15/07/2012 07:54

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## 6

Answers#### "A person in a wheelchair is moving up a ramp at a constant speed. Their total weight is 900 N. The ramp makes an angle of 10o with the horizontal. Calculate the force required to keep the wheelchair moving at a constant speed up the ramp. (You may ignore the effects of friction.)"

"I am preparing for a debate please tell A person in a wheelchair is moving up a ramp at a constant speed. Their total weight is 900 N.
The ramp makes an angle of 10o with the horizontal.
Calculate the force required to keep the wheelchair moving at a constant speed up the ramp. (You may ignore the effects of friction.)"

25/02/2013
## 1

Answers#### "A skateboarder with a total mass of 70 kg starts from rest at the top of a ramp and accelerates down it. The ramp is 25 m long and is at an angle of 200 to the horizontal. The skateboarder has a velocity of 12.2 m s–1 at the bottom of the ramp. (i) Calculate the average acceleration of the skateboarder on the ramp. (ii) Calculate the component of the skateboarder’s weight that is parallel to the ramp. (iii)Calculate the force of friction acting on the skateboarder on the ramp. (iv)What is the maximum height that the skateboarder can reach? (acceleration due to gravity = 9.8 m s–2)"

"I am eager to know. A skateboarder with a total mass of 70 kg starts from rest at the top of a ramp and accelerates down it. The ramp is 25 m long and is at an angle of 200 to the horizontal. The skateboarder has a velocity of 12.2 m s–1 at the bottom of the ramp.
(i) Calculate the average acceleration of the skateboarder on the ramp.
(ii) Calculate the component of the skateboarder’s weight that is parallel to the ramp.
(iii)Calculate the force of friction acting on the skateboarder on the ramp.
(iv)What is the maximum height that the skateboarder can reach? (acceleration due to gravity = 9.8 m s–2)"

25/02/2013
## 1

Answers#### "A block of mass 8.0 g moved 2.0 m along a bench at an initial velocity of 2.48 m s-1 before stopping. What was the average horizontal force exerted on the block while travelling this distance?"

"I want to understand this question A block of mass 8.0 g moved 2.0 m along a bench at an initial velocity of 2.48 m s-1 before stopping.
What was the average horizontal force exerted on the block while travelling this distance?"

25/02/2013
## 6

Answers#### If the mass of a skydiver is 90 kg and his average vertical acceleration is 0.83 m s-2, calculate the magnitude and direction of the average resultant force acting on him?

Can some one out in the Docsity world provide the details. If the mass of a skydiver is 90 kg and his average vertical acceleration is 0.83 m s-2, calculate the magnitude and direction of the average resultant force acting on him?

25/02/2013
## 1

Answers#### "A lunar buggy designed to travel on the surface of the moon (where acceleration due to gravity is1.6 m s-2) had a mass of 2000 kg when built on the earth. (i) What is the weight of the buggy on earth? (ii) What is the mass of the buggy on the moon? (iii)What is the weight of the buggy on the moon? (iv) A powerful rocket is required to leave the surface of the earth. A less powerful rocket is required to leave the surface of the moon. Explain why."

"Hey guys! One more question stuck, anyone? A lunar buggy designed to travel on the surface of the moon (where acceleration due to gravity is1.6 m s-2) had a mass of 2000 kg when built on the earth.
(i) What is the weight of the buggy on earth?
(ii) What is the mass of the buggy on the moon?
(iii)What is the weight of the buggy on the moon?
(iv) A powerful rocket is required to leave the surface of the earth.
A less powerful rocket is required to leave the surface of the moon. Explain why."

25/02/2013
## 6

Answers#### The earth is surrounded by a layer of air, called its atmosphere. Explain why the moon does not have an atmosphere.

Hi all, need help!!!!!! The earth is surrounded by a layer of air, called its atmosphere. Explain why the moon does not have an atmosphere.

25/02/2013
## 6

Answers#### "Why is the astronaut’s weight greater on earth than on the moon? "

"Hello everyone! Why is the astronaut’s weight greater on earth than on the moon?
"

25/02/2013
## 6

Answers#### An astronaut of mass 120 kg is on the surface of the moon, where the acceleration due to gravity is 1.6 m s–2. What is the weight of the astronaut on the surface of the moon?

Hi! Please help me I am stuck with this. An astronaut of mass 120 kg is on the surface of the moon, where the acceleration due to gravity is 1.6 m s–2. What is the weight of the astronaut on the surface of the moon?

25/02/2013
## 4

Answers#### Name two forces acting on a cheetah while it is running.

Hi Docsity Q n A contributors! Name two forces acting on a cheetah while it is running.

25/02/2013
## 6

Answers#### The cheetah is one of the fastest land animals. Calculate the resultant force acting on the cheetah while it is accelerating at a rate of 7 m s-2. The mass of the cheetah is 150 kg.

Hi all! I have lost all hope but I believe this forum can help me. The cheetah is one of the fastest land animals. Calculate the resultant force acting on the cheetah while it is accelerating at a rate of 7 m s-2. The mass of the cheetah is 150 kg.

25/02/2013
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