Question: a x = -3.9 m/s 2 In this example, the acceleration is caused by a friction force. A counter attendant in a diner shoves a

a_{x =}-3.9 m/s²

In this example, the acceleration is caused by a friction force. A counter attendant in a diner shoves a ketchup bottle with mass0.20kg along a smooth, level lunch counter. The bottle leaves her hand with an initial velocity of2.8 m/s.As it slides, it slows down because of the horizontal friction force exerted on it by the countertop. The bottle slides a distance of1.0m before coming to rest. What are the magnitude and direction of the friction force acting on it?

Suppose the counter attendant pushes a0.25kg bottle with the same initial speed on a different countertop and it travels1.3m before stopping. What is the magnitude of the friction force from this second counter?

f=?

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