Question

The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.

Answer 1

PHYSICS
0u) Classiy following forces according to 'contact' or 'non-contact
a) Gravitational Force
b) Electrostatic Force
c) Magnetic Force
d) Frictional Force
CF
1.
this
e) Muscular Force
Write S.I units of Force and Pressure in terms of kg, m, sec etc.
Q3) Define Atmospheric forces.
Q4) State whether the following statements are true or false:-
4. H
5.
Ar
6
(a
a. The unit of force is Pascal.
Weight is measured in Newton
c. Pulling a cart needs direct contact with the object
Direction in which an object is pushed or pulled is measure of magnitude of force
nteraction between two objects always involve direct physical contact.
05) Add the following forces represented in the form of arrows.
5N
-5N
5N
1ON
5 N
5N.
-15N
10.
5N
Q6
Define Atmospheric Pressure and write it units.
12.