Question

how to solve the problem given below.

Answer 1

you can make a free body diagram!

Answer 2

acceleration of the toy is the same as that of the car.
\[a=v/t\]

\[Wsin \theta=ma\]
\[mgsin \theta=ma\]
\[\sin \theta=a/g\]
\[\theta=\arcsin(a/g)\]

Answer 3

(b)
\[Wcos \theta=T\]