23 solutions available
Question 1A car covers a distance of 160 km between two cities in 4 h. What is the average speed of the car?
Question 2A train travels a distance of 300 km with an average speed of 60 km h-1. How much time does it take to cover the distance?
Question 3A boy travels with an average speed of 10 m s-1 for 20 min. How much distance does he travel?
Question 4A boy walks a distance of 30 m in 1 minute and another 30 m in 1.5 minute. Describe the type of motion of the boy and find his average...
Question 5A cyclist travels a distance of 1 km in the first hour, 0.5 km in the second hour and 0.3 km in the third hour. Find the average speed of...
Question 6A car travels with speed 30 km h-1 for 30 minutes and then with speed 40 km h-1 for 1 hour. Find:(a) the total distance travelled by the...
Question 7On earth the weight of a body of mass 1.0 kg is 10 N. What will be the weight of a boy of mass 37 kg in(a) kgf(b) N
Question 8The weight of a body of mass 6.0 kg on moon is 10 N. If a boy of mass 30 kg goes from earth to the moon surface, what will be his(a)...
Question 4fSelect the correct alternative:A boy goes from his house to school by bus at a speed of 20 km h-1 and returns back through the same route...
Question 10Explain oscillatory motion by giving one example.
Question 11What is vibratory motion? Give one example.
Question 12Differentiate between periodic and non-periodic motions by giving an example of each.
Question 13What is random motion? Give an example.
Question 14Name the type/types of motion being performed by each of the following:(a) Vehicle on a straight road.(b) Blades of an electric fan in...
Question 15Give two examples to illustrate that a body can have two or more types of motion simultaneously.
Question 16State the types of motion of the following:(a) The needle of a sewing machine(b) The wheel of a bicycle(c) The drill machine(d) The...
Question 17Distinguish between uniform and non-uniform motions, giving an example of each.
Question 18How do you determine the average speed of a body in non-uniform motion?
Question 19Define the term weight and state its S.I. unit.
Question 20How are the units of weight, kgf and newton related?
Question 21State three differences between mass and weight.
Question 22Which quantity: mass or weight, does not change by change of place?
Question 23State which of the quantities, mass or weight is always directed vertically downwards.