Advertisements
Advertisements
Question
The distance-time values for an object moving along straight line are given below:
| Time (s) | Distance (m) |
| 0 | 0 |
| 1 | 1 |
| 2 | 8 |
| 3 | 27 |
Advertisements
Solution
| Time (s) | Distance (m) | Velocity (ms-1)= distance/time | Acceleration (ms-1)= (v-u)/(t2-t1) |
| 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 |
| 2 | 8 | 4 | 3 |
| 3 | 27 | 9 | 5 |
So the object moves with increasing acceleration
APPEARS IN
RELATED QUESTIONS
If the moon attracts the earth, why does the earth not move towards the moon?
Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 1024 kg and of the Sun = 2 × 1030 kg. The average distance between the two is 1.5 × 1011 m.
What does a force do in the following case?
You catch a kicked ball.
Show that gravity decreases at higher altitudes.
Solve the following problem.
Calculate the acceleration due to gravity at a height of 300 km from the surface of the Earth. (M = 5.98 × 1024 kg, R = 6400 km).
State the universal law of gravitation and derive its mathematical expression.
Molecules in air in the atmosphere are attracted by gravitational force of the earth. Explain why all of them do not fall into the earth just like an apple falling from a tree.
Observe the figure and answer the questions:

- State Newton's universal law of gravitation.
- If the distance between the two bodies is tripled, how will the gravitational force between them change?
- What will happen to gravitational force, if mass of one of the object is doubled?
The acceleration of the Moon towards the Earth is approximately ______.
For an object outside a uniform solid sphere, from where is the sphere's mass considered to act?
