Question

1. Which force is responsible for downward movement of a
parachute? Will the person come down with the same speed without
the parachute?
2. Two thermocol balls held close to each other move away from each
other. When they are released, name the force which might be
responsible for this phenomenon. Explain.
3. How does an applied force changes the speed of an object?
4. Name the forces acting on the car sticking to an electromagnet in a
Junkyard. Which one of them is larger?
5. What are the effects of force on an object?

Answer 1

Answer:

1. gravitational force is required for parachute to come dow . without parachute the person will come with high speed as compared with the parachut

Answer 2

Answer:

Explanation:

GRAVITATIONAL FORCE IS APPLIED FOR THE DOWNWARD DIRECTION OF A PARACHUTE

Whenever any object or thing moves in downward motion or falls towards the earth, the force of gravity takes place. Now, he will not come down with the same speed without he parachute because the friction of air become less and as a result he will come down with the fastest speed as much as possible.

electrostatic force

Two Thermocol balls held close to each other move away from each other, which is because of electrostatic force. The balls having similar charges move away due to repulsion between similar charges.

When a force is applied on an object, it may change its speed. If the applied force is in the direction of motion, the speed of the object increases. If the force is applied in the direction opposite to the motion, then it results in a decrease in the speed of the object.

magnetic force

Answer: When the car is sticking to the electromagnet magnetic force and gravitataional force is acting on the car. Magnetic force is more larger because it is able to pull the car towards itself.

A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate. When there's the interaction between two objects they exert a force on each other, these exerted forces are equal in size but opposite in direction.