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Newton's laws

On a highway curve with radium 50m, the maximum centripedal force that can act on a 1,000kg car going around the curve is 8,000 Newtons. What speed limit should be posted for the curve so that cars can negotiate it safely?

Subject:

Physics

Topic:

Classical Mechanics

Posting ID:

7805

OTA ID:

103642

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Energy and Conservation Laws

Which has the larger linear momentum: A 2,000-kg houseboat going 5 m/s or a 600-kg speedboat going 20 m/s?

Subject:

Physics

Topic:

Classical Mechanics

Posting ID:

7806

OTA ID:

102959

View Details $1.99 Download Add to Cart

Energy and Conservation Laws

A 3,000-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 9 m/s. What was the original speed of the truck before the collision?

Subject:

Physics

Topic:

Classical Mechanics

Posting ID:

7807

OTA ID:

103642

View Details $1.99 Download Add to Cart

Energy and Conservation Laws

A rock weighs 100 lbs and is lifted 1 ft by a lever. How much work is done?

Subject:

Physics

Topic:

Classical Mechanics

Posting ID:

7808

OTA ID:

103642

View Details $1.99 Download Add to Cart

Energy and Conservation Laws

While in orbit about the earth, a space shuttle's mass is 80,000-kg and its speed is 7,900 m/s. What is its kinetic energy?

Subject:

Physics

Topic:

Classical Mechanics

Posting ID:

7809

OTA ID:

103144

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