Motion and Newton's laws

Which object would be harder to stop once it's moving, assuming both are moving at the same speed?

• A feather

• A bowling ball

• A beach ball

• A tennis ball

What is true about an object in equilibrium?

• It is always at rest.

• Its velocity is constantly changing.

• The net force acting on it is zero.

• It is experiencing acceleration.

If an object has a mass of 10 kg, what is the approximate force of gravity acting on it on Earth? (Assume g = 9.81 m/s^2)

• 10 Newtons

• 98.1 kilograms

• 98.1 Newtons

• 10 meters per second squared

In which direction does the normal force act on an object resting on a surface?

• Parallel to the surface.

• Perpendicular to the surface.

• In the same direction as gravity.

• Opposite to the direction of motion.

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When a reindeer pulls a sleigh forward, what is the reaction force exerted by the sleigh on the reindeer, according to Newton's Third Law?

• The sleigh pulling the reindeer backward.

• The ground pushing the reindeer forward.

• The reindeer pushing the ground backward.

• The sleigh pushing the ground backward.

What is the primary purpose of drawing a free body diagram for an object in physics?

• To calculate the object's volume.

• To visualize and label all forces acting on the object.

• To determine the object's material composition.

• To measure the object's temperature.

If a box weighing 5 Newtons is suspended by a rope, and an additional 5 Newtons of weight is added to the box, what will be the tension in the rope when the box is stationary?

• 5 Newtons

• 10 Newtons

• 0 Newtons

• Cannot be determined

In an elevator system with a 1000kg lift and an 850kg counterweight, what is the initial direction of acceleration of the lift when it is released?

• Upwards

• Downwards

• No acceleration

• Sideways