a 12-kg block is pulled by a string at a 30 degree angle. if the string exerts a 50 n force, the block accelerates at 4.13 m/s2. what is the frictional force and normal force exerted on the block?

Let, frictional force is f and normal force is N.

Balancing horizontal forces :

Also, balancing vertical forces, we get :

Therefore, the frictional force and normal force is -6.26 N and 142.6 N.

prolly a beacuse the momentuem the car has increases while going down hill

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