Ashopper in a supermarket pushes a cart with a force of 35 n directed at an angle of 25 degrees downward from the horizontal. find the work done by the shopper on the cart as the shopper moves along a 50 m length of aisle.

So:

F = 35 N

α = 25 °

d = 50 m

Knowing that W = F.d.cosα

Then: W = 35 × 50 × cos25°

⇔ W = 1586 J

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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