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Newton's Laws of Motion

Last updated almost 6 years ago

6 questions

1

Question 1

1.

A picture has a weight of 50 N and is suspended by a single vertical string. What is the name of the reaction force to the weight of the picture?

1

1

1

1

1

Question 2

2.

A man of mass 50 kg stands on a weighing scale in a lift. When the lift is ascending at 0.5 m/s, what is the weight of hte scale?

Question 3

3.

A car travelling on a horizontal road at constant speed of 10 m/s requires a forward force of 100 N. Ignoring the effect of air resistance, what is the force needed to travel at a constant speed of 15 m/s?

Question 4

4.

Newton 1st Law is applied to cases where are are no changes in the state of motion.

True

False

Question 5

5.

A bicycle is being peddaled and moving forward. What are the direction of the friction acting on the front and rear wheels?

both to the right

rear wheel to the left and front wheel to the right

rear wheel to the right and front wheel to the left

both to the left

Question 6

6.

The diagram shows a smooth pulley with two masses W kg and V kg hanging on each side. Given that W is greater than V. Express the acceleration of the system in terms of W, V and g where g is the gravitation acceleration