Two toy cars with masses as given are ready to race. Both cars begin from rest.

ID: 1410664 • Letter: T

Question

Two toy cars with masses as given are ready to race. Both cars begin from rest. The same force is applied to each car for 10 s.

For each question, state whether the correct answer is car A, car B, or whether the two cars have equal values for the parameter in question.

Car A = 1.00 kg

Car B = 1.62 kg

After 10 s which car has a larger momentum? Why? Explain in detail

Car A, Car B, or Neither?

After 10 s which car has a larger kinetic energy? Why? Explain in detail

Car A, Car B, or Neither?

Which car has traveled farther after 10 s? Why? Explain in detail

Car A, Car B, or Neither?

1. Since Force is applied in equal magnitude and for equal time in both cars and Force x time = Change in momentum

Therefore, Both will have same momentum Answer : Neither

2. K.E. = p2 /2m, Since both have same momentum, Car having smaller mass will have more K,E.

Answer: Car A

3. Less the mass, more the acceleration and therefore more displacement

Answer : Car A

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