Which of the following change the position of a body at rest to start moving and moving body to stop?
a) power
b) work
c)force
d)current
Which of the following agent change the direction of moving object?
a) power
b) work
c)force
d)current
What is the unit of force?
a) Joule
b)Newton
c) Watt
d) Mole
Explanation:A newton is the SI unit of force. It is named in honor of Sir Isaac Newton, the English mathematician and physicist who developed laws of classical mechanics. The symbol for newton is N. A capital letter is used because the newton is named for a person (a convention used for symbols of all units).
Which of the following symbol is used to represent the unit of force?
a) J
b)N
c) W
d) M
What is the value of 1 N force?
a)1kg.m/s
b) 1 g.cm/s
c) 1kg.km/s
Forces are divided into how many types on the basis of contact?
a) two
b) three
c) five
d) nine
Explanation:1. Contact forces and
2. Non-contact forces
