If the object pictured here as a mass of 15.0 kg and the incline is at an angle of 30 degrees, which of the following forces will be equal to the weight?
Normal force
Friction
Horizontal
Weight
The weight and the mass are the same
The weight, which is equal to 150 N
The normal force, which is equal to 130 N
The normal force, which is equal to 150 N

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Write the correct abbreviation for each metric unit

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •