A0.274 kg block is pushed up a frictionless ramp inclined at angle of 32° above the horizon. the push force is a constant 2.55 n and is parallel to the ramp. what is the speed of the block after it travels a distance d = 0.71 m if the block starts from rest? use work and energy.

The answer is 2,416 m/s. Let's jump in.

Explanation:

We do work with the amount of energy we can transfer to objects. According to energy theory:

W = ΔE

Also as we know W = F.x

We choose our reference point as a horizontal line at the block's rest point. At the rest, block doesn't have kinetic energy and since it is on the reference point(as we decided) it also has no potential energy.

Under the force block gains;

W = F.x →

In the second position block has both kinetic and potential energy. Following the law of conservation of energy;

W = ΔE = Kinetic energy + Potantial Energy

W = ΔE =

Here we can find h in the triangle i draw in the picture using sine theorem;

In a triangle

In our situation

→

Therefore

→

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

answer: i think he can see forward ten seconds and move forward ten seconds but giorno can undo his actions with ger.

explanation: