Question

No.
Date :
1
С a
Prove that (a-b]² (a²+b²),
(a+b)² are in a arithmetic progression.​

Answer 1

Answer:

No.

Date :

1

С a

Prove that (a-b]² (a²+b²),

(a+b)² are in a arithmetic progression......

hope it's helps.....he he...

Answer 2

Given : v = 20m/sec

u = 0m/sec

t = 5sec

To Find :- The magnitude of retarding force on the vehicle.

Solution :-

Mass of car (m) = 940 kg

Mass of driver (m') = 60 kg

Total mass (M) = (940+60) kg = 1000 kg

By using First law of motion,

$v = u + at \\ a = \frac{v - u}{t} \\ a \: = \frac{20 - 0}{5} \\ a = \frac{20}{5} \\ a = 4$

Hence, a = 4m/sec²

Retarding Force F = M × a

= 1000 × 4

= 4000N

Hence, the magnitude of retarding force on the vehicle is 4000N.

Hence, option (4) 4000N is correct.