Answer:
Image result for position (m) 80 60 40 20 - 20 -40 10 20 30 40 50 time (sec) What is the displacement from 15 to 40 sec? a 20 m b Оооо - 20 m -100 m с 100 m
The average velocity of the object is multiplied by the time traveled to find the displacement. The equation x = ½( v + u)t can be manipulated, as shown below, to find any one of the four values if the other three are known.
Explanation:
Answer:
F=507.7N
Explanation:
According to Newton's second law:
in this case, the football players need to drag the coach at a constant velocity, thus means with no acceleration, so:
there are 20 degrees between the two ropes that means each player exerts a force 10 degrees from the zero reference.
Answer:
Answer is D.
Explanation:
When you're dealing with a plane mirror, the angle of incidence (angle of incoming ray to the normal) is equal to the angle of reflection (angle of the outgoing ray to the normal.
The only situation here where that is true is in option D (both angles are 40 degrees). In the other 3 answer options, one angle is 40 degrees and one angle is 50 degrees.
