Advertisements
Advertisements
Question
What does a force do in the following case?
You catch a kicked ball.
Solution
Force decreases the momentum of ball and finally stops the ball.
APPEARS IN
RELATED QUESTIONS
State and explain Kepler's laws of planetary motion. Draw diagrams to illustrate these laws.
The weight of an object is more at the poles than at the equator. Is it beneficial to purchase goods at equator and sell them at the pole? Does it matter whether a spring balance is used or an equal-beam balance is used?
The gravitational field in a region is given by \[E = \left( 2 \overrightarrow{i} + 3 \overrightarrow{j} \right) N {kg}^{- 1}\] . Show that no work is done by the gravitational field when a particle is moved on the line 3y + 2x = 5.
[Hint : If a line y = mx + c makes angle θ with the X-axis, m = tan θ.]
Explain the following:
People often shake the branches of a tree for getting down its fruits.
Define one Newton. How much maximum acceleration can it produce in a mass of 1 kg?
Where will you weigh more: at the moon's surface or at the earth's surface?
What does a force do in the following case?
You pull the skin of your arm
Solve the following problem.
Find the gravitational force between the Sun and the Earth.
Given Mass of the Sun = 1.99 × 1030 kg
Mass of the Earth = 5.98 × 1024 kg
The average distance between the Earth and the Sun = 1.5 × 1011 m.
To project the rockets which of the following principle(s) is /(are) required?
We can shield a charge from electric fields by putting it inside a hollow conductor. Can we shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?