The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 sec. The speed (in km/hr) of the vehicle is
(a)
29.46
(b)
31.68
(c)
32.72
(d)
36.25
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 sec. The speed (in km/hr) of the vehicle is
(a)
29.46
(b)
31.68
(c)
32.72
(d)
36.25
Question ID - 50575 | SaraNextGen Top Answer
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 sec. The speed (in km/hr) of the vehicle is
(a)
29.46
(b)
31.68
(c)
32.72
(d)
36.25
|
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 sec. The speed (in km/hr) of the vehicle is |
|||||||
|
(a) |
29.46 |
(b) |
31.68 |
(c) |
32.72 |
(d) |
36.25 |
1 Answer
127 votes
Answer Key / Explanation : (b) -
Distance covered in 5 sec = 
cm = 44 m.
Distance covered in 1 sec = 
m.
Speed = 8.8 m/s = 31/68 km/hr.
127 votes
Answer Link
127