Physics, 12.12.2021 14:00 aloading6574
In his Principia Mathematica Newton expressed his third law of motion as “to every action there is always opposed an equal reaction”. State what Newton meant by this law. (1) (b) A book is released from rest and falls towards the surface of Earth. Discuss how the conservation of momentum applies to the Earth-book system. (3) Worksheet Work, Energy, Power & Momentum 5 (c) A large swinging ball is used to drive a horizontal iron spike into a vertical wall. The centre of the ball falls through a vertical height of 1.6 m before striking the spike in the position shown. The mass of the ball is 3.5 kg and the mass of the spike is 0.80 kg. Immediately after striking the spike, the ball and spike move together. Show that the (i) speed of the ball on striking the spike is 5.6 m s–1 .
Answers: 3
Physics, 21.06.2019 18:10
Amass has an acceleration of 10- 2t. what is its velocity and displacement if it started at x- 4m and the initial velocity was 8m/s? at what time does it have 0 velocity? graph all graphs.
Answers: 2
Physics, 22.06.2019 16:00
Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative
Answers: 1
In his Principia Mathematica Newton expressed his third law of motion as “to every action there is a...
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