Question

Newton's Second Law of Motion is expressed as F = ma.

A lawn mower is pushed over a length of grass. If the pushing force suddenly doubles what will happen to the lawn mower's rate of acceleration?
The mass of the lawn mower is constant.

A.The acceleration will double.
B.The acceleration will decrease by half.
C.The acceleration will remain constant.
D.The acceleration will triple.

Answer 1

m is mass; a is acceleration; f is force.
force = mass x acceleration.
If the mass is constant, and the force doubles, what happens to the acceleration?

Answer 2

this is what you are asking- but simplified.

Answer 3

lets use a make believe equation where m and a are the same.
lets make them 3.

Answer 4

that means it is f = 3 x 3
got it?

Answer 5

3 x 3 is 9.
since 9 is force, we need to double it, making 18.

Answer 6

now you must divide the force by the mass since it is multiplied.
18 divided bu 3 is 6.
6 is the new acceleration.

Answer 7

6 is the DOUBLE of 3.
so your answer is A.

Answer 8

I hope this helped:)