Question

A cat has a mass of 4.6 kg. What is its weight on Earth's surface?

73 N

45 N

56 N

66 N

Answer 1

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➷ Earth's gravity is approximately 9.81

weight = mass x gravity

weight = 4.6 x 9.81

weight = 45.126

Answer is B. 45N

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Answer 2

Choice b is correct answer.

Explanation:

We have given the mass of a cat.

mass = m = 4.6kg

We have to find the weight of cat on earth' surface.

The formula to find weight is:

weight = mass × gravity

w = mg

The value of gravity on earth surface is 9.8 m/sec².

Putting values in above formula, we have

w = 4.6 × 9.8 (kgm/sec²) ∴ kgm/sec² = Newtons

w = 45 Newtons which is the answer.