Question

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



A lawn mower with constant mass is pushed over a length of grass.



How much force is required to triple the acceleration rate?



A.
The force required is one-third the original force.


B.
The force required is three times the original force.


C.
The force required remains constant.


D.
The force required is four times the original.

Answer 1

@Destinymasha @votick @shelbygt520 @Shadowdragon

Answer 2

F = ma, means that force is directly proportional to mass, and directly proportional to acceleration. Ie: when force goes up, acceleration will up the same. In order to have 3 times the acceleration you would need 3 times the force.

Example: if force is 10 newtons, and you have mass = 2 with acceleration = 5 you will get:
10 = 2 x 5
What if force is now 30 newtons (3 time greater), you need 30 = 2 x 15, which means acceleration was multiplied by 3.

Answer 3

so its B?

Answer 4

Yessir. Just make sure you understand why it is B. The intuition is the real important part!

Answer 5

Thanks!