Anr 3
Step-by-step explanation:
it is 3
Answer:
D. Class frequency divided by the total frequency.
<u>E</u><u>x</u><u>p</u><u>l</u><u>a</u><u>n</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u>
<u>Formula to be used,</u>
- 1st equation of motion, <u>v = u + at</u>
- • 3rd equation of motion,<u>v² - u² = 2</u> as
<u>Solution,</u>
Putting all the values, we get
<u>v=u + at</u>
⇒0 = u + (-0.5) × 20
⇒-u=-0.5 × 20
<u>⇒u = 10 m/s</u>
<u>Hence, the initial vel</u><u>ò</u><u>city of the car is 10</u>
<u>city of the car is 10m/s.</u>
Now, the distance covered,
<u>v²-u² = = 2as</u>
⇒ (0)²-(10)² = 2 × (-0.5) × s
⇒-100 = - 1s
<u>⇒ s = 100 m</u>
<u>Hence, the distance covered is 100 m.</u>
5 is d. obtuse
6 is b. acute
P(1, 2), Q(3, 4)
we find the slope dividing the y over the x, that is:
m = (4 - 2)/(3 - 1) = 2/2
m = 1
and then use the line equation for a point and slope:
y - y1 = m(x - x1)
where (x1, y1) is a point through which the line passes, we use P(1,2):
y - 2 = 2(x - 1)
y - 2 = 2x - 2
y = 2x
therefore the slope is 2 and the y-axis intercept is 0