A suitcase kept in a moving bus moves forward when the bus.
A) Comes to rest
B) Moves forward
C) Takes turn
D) At rest
1 Answers
Talk Doctor Online in Bissoy App
A 10 kg mass moving at 5 m/s collides head on with a 4 kg mass moving at 2 m/s in the same direction. If e = 1/2, find their velocity after impact.
Given: m1 = 10 kg, m2 = 4 kg u1 = 5 m/s, u2 = 2 m/s, e = \(\frac{1}{2}\) To find: Velocity after impact (v1 and v2) Formulae: i. m1u1 + m2u2 = m1v1 + m2v2 ii. e = \((\frac{v_2-v_1}{u_1-u_2})\) Calculation: From formula (i), 10 × 5...
2 Answers 1 views
i. Lenses are kept in contact with each other ii. Two lenses kept at a distance d apart from each other.
i when lenses are kept in contact then 1/f = 1/f1 + 1/f2 f = f1f2 / f1 + f2 ii. When kept distant apart, 1/f = 1/f1 +1/f2 - d/f1f2
2 Answers 1 views
With respect to passengers in a moving bus the state of motion of tree is ………………
C) motion in opposite direction
2 Answers 1 views
If a fly colloids with the wind sheild of a fast moving bus, then a) the impact forces experienced by the fly and bus are same.
Correct option is A) ‘a’ only
2 Answers 1 views
You are travelling in a bus with 40 km/hr speed. Then your speed related to the observer standing out side of the bus is
Correct option is B) 40 km/hr
2 Answers 1 views
Luggage kept on the roof of a bus is tied with a rope, because it fall down due to
A) static inertia of the luggage
2 Answers 1 views
A ball of mass 1 kg moves perpendicularly to a bat with a speed of 5 m/s. And the bat of 10 kg moves opposite to the ball with 2 m/s.
Correct option is A) 1 m/s
2 Answers 1 views
The work done in lifting a suitcase of mass 10 kg at a height of 2m from the ground is
Given, m = 10 kg h = 2 m g = 9.8 m/s2 Work done, W = mgh W = 10 × 9.8 × 2 = 196J
2 Answers 2 views
Assertion (A): Rollers are fitted to suitcase to pull easily.
B) Assertion is correct, Reason is incorrect.
2 Answers 1 views
A bus is moving towards a huge wall with a velocity of `5m//s^(-1)`. The driver sounds a horn of frequency `200 Hz`. The frequency of the beats heard
Correct Answer - 6 Hz
2 Answers 4 views