distance traveled by a uniformly accelerated bike is given as
here we know that
now we will have from above equation
so it will cover the total distance of 300 m
Answer:
use their own matter to create nuclear reactions
generate their own energy
are classified primarily by temperature
usually seem bright if they are close to Earth
Explanation:
Answer:
v_f =63 m/s
Explanation:
given,
starting force = 0 N
uniform rate increase to 36 N
time of action of Force = 35 s
mass of the body = 10 Kg
Speed of the object = ?
From the given data
if we plot F-t curve we will get a triangular shape
we know,
Impulse = Area between F-t curve
= (1/2) x base x height
= 0.5 x 35 x 36
= 630 N.s
now use Impulse-momentum theorem
Impulse = change in momentum
630 = 10 x (v_f - vi)
630 = 10 x (v_f - 0)
v_f =63 m/s
Speed of the object at 35 sec is equal to v_f =63 m/s
<u>In farsighted eyesight (Hypermetropia )
</u>
A person with hypermetropia can see distant objects clearly but cannot see nearby objects distinctly.The light rays from a close by object are focused at a point behind the retina
<u> In nearsighted eyesight (Myopia )
</u>
A person with myopia can see nearby objects clearly but cannot see distant objects distinctly.the image of a distant object is formed in front of the retina
<u>corrective measure in each case
</u>
1. <u>In farsighted eyesight
</u>
This defect can be corrected by using a convex lens of appropriate power
2.<u> In nearsighted eyesight
</u>
A concave lens of suitable power will bring the image back on to the retina and thus the defect is corrected.
