Which
of the following is/are example/s of non-contact force/s?
a) weight of the body
b)
magnetic force
c) gravitational force
d) all of these
Which of the following is/are example/s of non-contact force/s?
a) electrostatic force
b) drag force
c) friction
d) all of these
Who proposed the law that “every action has equal but opposite reaction”?
a) Dalton
b) Einstein
c)Newton
d) Nicola Tesla
Explanation:Sir Isaac Newton PRS was an English mathematician, physicist, astronomer, alchemist, theologian, and author, widely recognized as one of the greatest mathematicians and physicists of all time and among the most influential scientists. He was a key figure in the philosophical revolution known as the Enlightenment.
When we throw a ball against the wall, the force that applies on the wall is…….
a) action
b) reaction
c) friction
After striking the wall, ball comes back to you due to force exerted by the wall on the ball is
a)action
b)reaction
c) both a and b
To walk on the road, we push the ground backward as……
a) action
b) reaction
c) friction
d) gravity
