Question

A 3 kg mass attached to a spring scale rests on
frictionless surface as shown in figure. The spring
scale attached to the front end of a box car, reads
15 N when the car is in motion. If the spring reads
zero when the car is at rest, determine
acceleration of the car while it is in motion
(1) 1 m s-2
(2) 3 m s-2
(4) 10 m s-2
(3) 5 m
2
L
ingoflar​

Answer 1

Answer:5m/s^2

Explanation:

F=15

M=3kg

So by f=ma

a=f/m

a=5

Answer 2

Answer:

down

Explanation:

refer to pic...........