1. A particle is traveling through space and time encountering gravitational and
ID: 581550 • Letter: 1
Question
1. A particle is traveling through space and time encountering gravitational and electrical forces. Compare the particle's magnitude of displacement with the particle's distance traveled. A) The displacement is either greater than or equal to the distance traveled. B) The displacement is always equal to the distance traveled. C) The displacement is either less than or equal to the distance traveled. D) The displacement can be either greater than, smaller than, or equal to the distance traveled. E) Impossible to compare distance and displacement for this particle.
2. Imagine a particle traveling through outer space along a straight-line trajectory for 1000 years. Which scenario would the average velocity of the particle be equaled to the instantaneous velocity over this time interval?
A) only when the velocity is increasing at a constant rate
B) only when the velocity is decreasing at a constant rate
C) when the velocity is constant
D) always
E) never
3. Which of the following situations is impossible for a particle traveling along the x-axis (east/west)?
A) The particle has velocity directed east and acceleration directed west.
B) The particle has velocity directed east and acceleration directed east.
C) The particle has zero velocity but non-zero acceleration.
D) The particle has constant non-zero acceleration and changing velocity.
E) The particle has constant non-zero velocity and changing acceleration.
Explanation / Answer
Q no 1
option C
The displacement is either less than or equal to the distance traveled.
displacement can never be greater then the distance as it is the shortest distance between initial and final position.
Q.No 2
Option C
when velocity is constant then average velocity is equal to instataneous velocity.
Q.No. 3
Option E
it is not possible for a particle to have constant velocity with changing acceleration
Q no . 4
maximum height is
H = V^2/2g
it does not depend on mass. so 20 kg mass also reach the same height h
Option C
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