Pherguson Physics Practice Problems 1.4
More Problems with Equations of Motion with Constant Acceleration
1. Corey's Jeep accelerated from 12 m/s [W] to 25 m/s [W] in 4.7 s. What was his
displacement? (87 m [W])
2. MinhThao was programming her robot so that it would accelerate at 1.5 cm/s2 [N] for 2.5
seconds. If it started with a velocity of 6.8 cm/s [N], how far did it travel? (22 cm)
3. Eric was cycling at 15 m/s [S] when he came to an abrupt stop in 4.9 s. Determine the
distance he travelled while stopping. (37 m)
4. While on a steam train ride in Florida, Joanne noted that the train took 1.3 km to stop
from its velocity of 75 km/h [E]. What was the acceleration of the train? (0.17 m/s2 [W])
5. Arvi was a guest at the shooting range, using a rifle that gave bullets a muzzle velocity of
450 m/s in only 2.8 ms. Calculate the acceleration of the bullets. (1.6 x 105 m/s2 [fwd])
6. Glenn was out on his motorcycle and needed to pass a slower driver. If he increased his
velocity from 21 m/s [S] to 32 m/s [S] while traveling 180 m, how long did it take him to
pass? What was his average acceleration? (6.8 s, 1.6 m/s2 [S])
7. The McLaren F1 had a top speed of 391 km/h using a 618 hp BMW engine. If this car
could accelerate at 7.0 m/s2, how long would it the F1 to reach 100 mph from rest, given
that 1 mph = 1.61 km/h? (6.4 s)
8. Frank was driving his Smart car at top speed, 25.0 m/s when he noted a deer on the side
of the road 95 m away. If the Smart car's brakes provide an acceleration of -3.8 m/s2,
how much reaction time would Frank have if he had to stop before hitting the deer?
(1.0 s)
9. The PhysBlast amusement park ride accelerates riders directly upward with an
acceleration of 4.0g. How long does it take for the riders to reach a height of 28 m?
(1.2 s)
Remember with all problems, identify your givens, especially the 'special'
conditions, select the best equation to use, substitute clearly and solve. Your final
answer should have the appropriate number of significant digits.