Answer:
1. v = 6.67 m/s
2. d = 9.54 m
Explanation:
1. To find the horizontal velocity of the rock we need to use the following equation:
<u>Where</u>:
d: is the distance traveled by the rock
t: is the time
The time can be calculated as follows:
<u>Where:</u>
g: is gravity = 9.8 m/s²
Now, the horizontal velocity of the rock is:
Hence, the initial velocity required to barely reach the edge of the shell below you is 6.67 m/s.
2. To calculate the distance at which the projectile will land, first, we need to find the time:
So, the distance is:
Therefore, the projectile will land at 9.54 m of the second cliff.
I hope it helps you!
Answer:
Because of frictional force acting in the opposite direction.
Explanation:
The force of push on the body of Joel is 60 N. The body doesn't move. This clearly means that there must be a force acting in the opposite direction that has a magnitude equal to 60 N so that the net force acting on the body of Joel is 0 and hence the body doesn't move forward.
This opposite force is the frictional force which acts between the surface of snow and Joel. The frictional force always opposes relative motion.
So, when Joel's friend pushes him, he tends move him forward. Therefore, frictional force acts in the opposite direction to oppose the motion. If the frictional force is strong enough to stop the force of push, the body won't move.
This frictional force acting on a stationary body is a variable force and has a maximum value known as limiting friction. When the force of push exceeds the limiting friction, the body just starts to move. The body won't move till the force pf push is less than or equal to limiting friction.
Thus, Joel' friend push is less than or equal to the limiting friction and therefore, Joel is not moving.
More info is needed. if it is in a controlled circuit I would say yes. but in a non controlled environment I would say no it's a dispersement.
Answer:
True
Explanation:
As frequency increases, the length of the wave (period) decreases.
As frequency decresaes, the length of the wave (period) increases.
Please mark for Brainliest!! :D Thanks!
For any questions, please comment below and I'll respond ASAP!!