The Same Constant Force Is Used to Accelerate Two Carts

question 56

Multiple Choice

The same constant force is used to accelerate two carts of the same mass,initially at rest,on horizontal frictionless tracks.The force is applied to cart A for twice as long a time as it is applied to cart B.The work the force does on A is W_A;that on B is W_B.Which statement is correct?

• A)W_A = W_B.
• B)W_A = W_B.
• C)W_A = 2 W_B.
• D)W_A = 4 W_B.
• E)W_B = 2 W_A.

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