The statement that motion is relative is an important concept in physics. The meaning behind this statement is that the motion of an object is relative to either the frame of reference of the observer, or to another distinct frame of reference.
Answer:
I think option B 0.125
Explanation:
but i am not sure so don't mind
Answer:
210
Explanation:
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground. What is the height of the cliff and the horizontal distance traveled by the ball?
S = (1/2)*9.8 m/s^2 * 7^2 = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
The acceleration of the box is 
Explanation:
The acceleration of the crate can be found by analyzing the forces acting along the direction parallel to the incline. We have three forces:
- The force of push, F = 125 N, pushing up along the incline
- The force of friction,
, acting down along the incline - The component of the weight parallel to the incline,
, also acting downward
Taking into account the direction of each force, the equation of motion along this direction is:
where
F = 125 N
is the weight of the crate
is the angle of the incline
is the mass of the box
a is the acceleration
And solving for a, we find:
Learn more about forces and acceleration:
brainly.com/question/11411375
brainly.com/question/1971321
brainly.com/question/2286502
brainly.com/question/2562700
#LearnwithBrainly
