You push a shopping cart full of groceries. The shopping cart has a mass of 32 kg. a. What is the weight of your shopping cart?

Question

You push a shopping cart full of groceries. The shopping cart has a mass of 32
kg.
a. What is the weight of your shopping cart?

b. How much force must you apply to give the cart an acceleration of 1.3 m/s2?

c. If you push with a force of 200 N, what is the acceleration of the cart?

d. You are driving home from the store. If your car has an acceleration of 4.1 m/s2 and its engine is applying a forward force of 7000 N, what is the mass of your car?

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Ben Gia 5 years 2021-08-13T22:07:26+00:00 1 Answers 11 views 0

Answers ( )

  1. sori
    0
    2021-08-13T22:09:11+00:00
    Reply

    Answer:

    a) 320N (if you take gravity as 10ms^-2) or 313.6N (if you take gravity as 9.8ms^-2

    b) 41.6N

    c) 6.25ms^-2

    d) 1707.317 kg

    Explanation:

    a) W=mg

        W= 32 x 10 or 9.8

        W = 320N or 313.6N

    b) F=ma

       F= 32 x 1.3

       F= 41.6N

    c) F=ma

       200 = 32 x a

       a= 6.25ms^-2

    d) F=ma

        7000= m x 4.1

         m= 1707.317 kg

       

    I am not completely sure about the d) part because I dont whether you will be taking Friction and Normal Reaction too. As per my knowledge, I think no, as no angles nor the gradient of the floor/road is mentioned here.                  

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