Answer:
a) 
b) 
Explanation:
Given:
- mass of the body,
- mass of the tyre,
- length of hanging of tyre,
- distance run by the body,
- acceleration of the body,
(a)
Using the equation of motion :
..............................(1)
where:
v=final velocity of the body
u=initial velocity of the body
here, since the body starts from rest state:
putting the values in eq. (1)
Now, the momentum of the body just before the jump onto the tyre will be:
Now using the conservation on momentum, the momentum just before climbing on the tyre will be equal to the momentum just after climbing on it.
(b)
Now, from the case of a swinging pendulum we know that the kinetic energy which is maximum at the vertical position of the pendulum gets completely converted into the potential energy at the maximum height.
So,
above the normal hanging position.
<span>b. the reason we must wear seat belts </span>
Answer:
<u>Speed = 1.2 m/s</u>
Explanation:
<em>Convert 20 min into seconds</em>
<em>1min= 60sec</em>
20min = 20*60 sec
<em>20 min= 1200sec</em>
Time = 1200 sec
Distance = 1000m
Speed = 
Speed = 
<u>Speed = 1.2 m/s</u>
<u></u>
<em>Hope this helps.</em>
Answer:
The Great Pyramid of Giza (also known as the Pyramid of Khufu or the Pyramid of Cheops) is the oldest and largest of the pyramids in the Giza pyramid complex bordering present-day Giza in Greater Cairo, Egypt.It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact.
Explanation:
Answer:
Older homes did not have the same safety requirements when they were constructed that newly built homes now have to meet; any preventative measures like smoke alarms were left up to the home owners.
Explanation:
