class 7 CBSE WORKSHEET -TIME AND MOTION

Q1. Define speed. State its S. I. unit.

Q2. Differentiate between uniform and non-uniform motion.

Q3. Describe a simple pendulum. Draw a diagram. What kind of motion does it show? How can the time period of pendulum can be increased or decreased?

Q4. For a simple pendulum; define:-

        a) One oscillation

        b) Time period

        c) Frequency

Q5. A truck travels a distance of 540 km in 4.5 hours. Calculate its speed.

Q6. The distance between two stations is 1995 km. How much time it will take to cover this distance at an average speed of 19 km/h?

Q7. A car takes 20 minutes to cover a distance of 15 km. Calculate its speed in km/h.

Q8.Convert 45m/s into Km/h.