A cart is moving toward the right and speeding up, as shown in the diagram below

Question

A cart is moving toward the right and speeding up, as shown in the diagram below. Assume that the cart is already moving at t_1. If the positive direction is toward the right, what is the sign of force at t = 2s? No direction because the magnitude is zero.; Left; Right; Not enough information to estimate.; A cart is moving toward the right and slowing down, as shown in the diagram below. Assume that the cart is already moving at t_1 and t_4. If the positive direction is toward the right, what is the sign of force at t = 2s? Right; Not enough information to estimate.; Left; No direction because the magnitude is zero.;

Explanation / Answer

Question 7: Correct answer is 'Right'.

Because, from the figure it is clear that the car is accelerating so force shall be positive and hence its direction towards right side.

Question 8: Correct answer is 'Left'.

Because the car is deaccelerating hence sign of force is left.

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