Yes. Do as they suggest and draw a FBD. That will help you to resolve the components.jamiebean said:
Unless by "base" they mean the top of the hill? That would usually be referred to as the "top" or "crest" of the hill, not the "base", IMO... Is there a diagram that goes with this problem?berkeman said:
One one hand, the question does not specify whether the positive direction is uphill or downhill so the number for the acceleration can have either sign. On the other hand, the question may have adopted the convention that "positive" means "in the direction of the velocity" which means the number must be negative. The question would have no ambiguity if it asked for the magnitude or if it specified which way is positive.berkeman said:
The main cause of deceleration for rocks sliding up a hill is the force of gravity acting against the motion of the rock. As the rock moves up the hill, it must overcome the downward pull of gravity, causing it to slow down.
The steeper the angle of the hill, the greater the force of gravity acting against the motion of the rock. This results in a higher deceleration rate for the rock as it slides up the hill.
Yes, the type of rock can have an impact on the deceleration rate while sliding up a hill. Rocks with a rougher surface or more irregular shape may experience more friction as they move up the hill, causing them to decelerate at a faster rate.
Yes, there is a maximum speed that a rock can reach while sliding up a hill. This is due to the force of gravity, which will eventually slow the rock down to a complete stop if the hill is steep enough.
External factors, such as wind or water, can impact the deceleration of rocks sliding up a hill. Wind can create additional resistance against the rock, causing it to decelerate at a faster rate. Water can also add weight to the rock, making it more difficult to move up the hill and resulting in a slower deceleration rate.