If the mass of a cart full of groceries decreases to half and its speed doubles, the momentum of the cart
The correct option for the statement “If the mass of a cart full of groceries decreases to half and its speed doubles, the momentum of the cart”.
Answer to Problem 4RAT
The correct option for the statement “If the mass of a cart full of groceries decreases to half and its speed doubles, the momentum of the cart” is option (a).
Explanation of Solution
Given info: The initial mass of the grocery cart is
Write the expression to calculate the initial momentum of the cart.
Here,
Substitute
Write the expression to calculate the final momentum of the cart.
Here,
Substitute
The initial and final momentum of the grocery car is same, so the momentum of the grocery cart remain unchanged if mass decreases to half and speed doubles.
Conclusion:
Therefore, the correct option for the statement “If the mass of a cart full of groceries decreases to half and its speed doubles, the momentum of the cart” is option (a).
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