Name:__________________________________________ Date: _________________________ Pd: __________
Honors Physics
Mr. Roberts
2D Kinematics Test Review
Conceptual Questions
1. A bullet fired from a rifle begins to fall
a. As soon as it leaves the barrel
b. After air resistance reduces its speed
c. Not at all if air resistance is ignored
2. One ball is dropped vertically from a window. At the same instant, a second ball is thrown horizontally
from the same window. Which ball has the greater speed at ground level?
a. The dropped ball
b. The thrown ball
c. Neither – they both have the same speed on impact
d. It depends on how hard the ball is thrown
3. Imagine you’re standing on top of a moving train (don’t try this at home). You hold a baseball glove out
in front of you, remove the baseball and you throw it straight up into the air. Ignoring air resistance,
where will the ball land?
a. In front of you
b. In your glove
c. Behind you
d. Can’t decide from the given information
4. A baseball is hit high and far (hopefully for a homerun). Which of the following statements is true? At
the highest point….
a. The magnitude of the acceleration is zero
b. The magnitude of the overall velocity is zero
c. The magnitude of the horizontal velocity is zero
d. The magnitude of the vertical velocity is zero
5. A ball is thrown horizontally at a wall traveling with a velocity of 5 m/s. The ball bounces off the wall
and travels horizontally in the opposite direction at 5 m/s. What is the change in velocity of the ball?
(HINT: remember change in anything is final – initial and when dealing with velocities direction
matters…)
a. 5 m/s to the right
b. 5 m/s to the left
c. 10 m/s to the right
d. 10 m/s to the left
6. A hunter is aiming horizontally at a monkey who is sitting in a tree. The monkey is so terrified when it
sees the gun that it falls off the tree. At that very instant, the hunter pulls the trigger. What will
happen?
a. The bullet will miss the monkey because the monkey falls down while the bullet speeds straight
forward
b. The bullet will hit the monkey because both the monkey and the bullet are falling downward at
the same rate due to gravity
c. The bullet will miss the monkey because although both the monkey and the bullet are falling
downward due to gravity, the monkey is falling faster.
d. It depends on how far the hunter is from the monkey.
7. Which statements are NOT valid for a projectile? Take up as positive
a. The projectile has the same x velocity at any point on its path.
b. The acceleration of the projectile is positive and decreasing when the projectile is moving
upwards, zero at the top, and increasingly negative as the projectile descends
c. The acceleration of the projectile is a constant negative value
d. The y component of the velocity of the projectile is zero at the highest point of the projectiles
path
e. The velocity at the highest point is zero
8. On the parabola below sketch the horizontal and vertical components of the projectiles velocity &
C
acceleration vectors.
B
A
D
E
Practice Problems
9.
A boat, whose speed in still water is 8.0 m/s, crosses a river with a current of 6.0 m/s. If the boat heads
perpendicular to the current, what is the speed of the boat relative to an observer standing on the shore
as it crosses the river? [10.0 m/s]
10. A ball is thrown horizontally at 12.2 m/s from the roof of a building lands 21.0 m from the base of the
building. How tall is the building? Assume air resistance is negligible. [14.52 meters]
11. A football is kicked to start the game. If the ball leaves the tee moving 35 m/s and is moving at an angle
of 40 degrees to the horizontal find (A) maximum height reached by the ball (B) time to hit the ground
(C) horizontal distance traveled by the all. [(A) 25.8 m (B) 4.59 s (C) 123.1 m]
12. A diver leaves the end of a 4.0 meter high diving board and strikes the water 1.3 s later, 3.0 meters
beyond the end of the board. Determine (A) her initial velocity (B) the maximum height reached and (C)
the velocity with which she enters the water. Ignore air resistance. [(A) 4.02 m/s, 55° (B) 4.55 m (C) 9.72
m/s, 76.3° below x]