what is a force?, A push or pull, A type of energy , A form of matter, A type of motion , Which of the following is a contact force?, Gravitational force, Frictional force, Magnetic force, Electrostatic force, What is the SI unit of force?, Joule, Meter, Watt, Newton, A force can change which of the following?, Shape of an object , Direction of motion, Speed of an object , All of these, Which force helps us to walk without slipping?, Gravitational force, Friction, Muscular force, Magnetic force, What causes a book to stay on a table without moving?, Unbalanced force, Magnetic forces, Balanced force, Gravity , What happens when an unbalanced force acts on a body?, Its motion changes, It remains still, It moves with constant speed, It become weightless.

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