# 2pilihanIf there is NO net force acting on an object, its means thatThe object is at restThe object is moving with constant velocityThe acceleration is zeroAll of above
# 3pilihanWhich statement about kinetic friction is TRUE?Kinetic friction increases when the relative velocity increasesKinetic friction is lower than static frictionKinetic friction is independent of the nature of the surface in contactKinetic friction depends on velocity
# 4pilihanWhich law explains the relationship among mass, force and acceleration?Newton`s 1st law of motionNewton`s 2nd law of motionNewton`s 3rd law of motionUniversal LAW OF GRAVITATION
# 5pilihanA school bus suddently stops and all of the backpacks on the floor start to slide forward. What causes them to do that?AccelerationFrictionGravityInertia
# 6pilihanWhich statement is NOT TRUE about force?A force changes motionUnit of force, F is kg m s^-2A push or a pull is a type of forceA force has a magnitude and no direction
# 7pilihanA force that always opposes the motion between two surfaces in contact is known asfrictionweighttensionresistance
# 8pilihanIf an object is STATIONARY on a smooth surface, which force is still action on it?tensionfrictionweightgravity
# 10pilihanIf an orange is hanging on a tree, the downward force is weight and the upward force would be?tensionweightfrictionnormal