Question

FILL IN THE BLANKS
1 The force of gravity is a ____ force.
2 The force required to lift 1g mass vertically upward is _______
3 The force of friction acts in the ____ direction to the direction of applied force.
answer fast

Answer 1

Answer:

1 non contact force

2 2 g

3 opposite

Answer 2

1. Non-contact force

2. Gravitational force

3. Frictional force

Explanation:

• The most familiar non-contact force is gravity. The force of attraction that exists among all bodies that have mass.
• One Newton approximately equals the force to lift vertically upwards a 100 g mass against the gravitational acceleration. Another commonly used unit of force is kgf, which is the force required to lift vertically upward a mass of 1 kg.
• Frictional force offers the resistance to the applied force opposing its motion. Thus, it always acts in the direction opposite to that of the object in motion.