Author Question: A particle starts from rest at xi = 0 and moves for 10 s with an acceleration of +2.0 cm/s2 . For ... (Read 275 times)

abarnes · **on:** Jul 28, 2018

A particle starts from rest at xi = 0 and moves for 10 s with an acceleration of +2.0 cm/s2 . For the next 20 s, the acceleration of the particle is -1.0 cm/s2 . What is the position of the particle at the end of this motion?
a. zero
b. +3.0 m
c. -1.0 m
d. +2.0 m
e. -3.0 m

Question 2

An electron, starting from rest and moving with a constant acceleration, travels 2.0 cm in 5.0 ms. What is the magnitude of this acceleration?
a. 2.5 km/s2
b. 0.80 km/s2
c. 1.6 km/s2
d. 1.3 km/s2
e. 3.2 km/s2