Projectile Motion
Questions
A ball is thrown at an original speed of
8.0 m/s at an angle of 35° above the
horizontal. What is the speed of the
ball when it returns to the same
horizontal level?
A ball is thrown at an original speed of
8.0 m/s at an angle of 35° above the
horizontal. What is the speed of the
ball when it returns to the same
horizontal level?
8.0 m/s
A package of supplies is dropped from
a plane, and one second later a second
package is dropped. Neglecting air
resistance, the distance between the
falling packages will
A) be constant.
B) decrease.
C) increase.
D) depend on their weight.
A package of supplies is dropped from
a plane, and one second later a second
package is dropped. Neglecting air
resistance, the distance between the
falling packages will
C) increase.
At what angle should a water-gun
be aimed in order for the water to
land with the greatest horizontal
range?
At what angle should a water-gun
be aimed in order for the water to
land with the greatest horizontal
range?
45°
The acceleration of gravity on the moon is
only one-sixth of that on earth. If you hit a
baseball on the moon with the same effort
(and at the same speed and angle) that you
would on earth, the ball would land
A) the same distance away.
B) one-sixth as far.
C) 6 times as far.
D) 36 times as far.
The acceleration of gravity on the moon is
only one-sixth of that on earth. If you hit a
baseball on the moon with the same effort
(and at the same speed and angle) that you
would on earth, the ball would land
C) 6 times as far.
When a football in a field goal attempt
reaches its maximum height, its speed
is
A) zero.
B) less than its initial speed.
C)equal to its initial speed.
D) greater than its initial speed.
When a football in a field goal
attempt reaches its maximum
height, its speed is
B) less than its initial speed.
A pilot drops a bomb from a plane
flying horizontally. When the bomb
hits the ground, the horizontal location
of the plane
A) will be behind the bomb.
B) will be over the bomb.
C) will be in front of the bomb.
D) cannot be determined.
A pilot drops a bomb from a plane
flying horizontally. When the bomb
hits the ground, the horizontal
location of the plane
B) will be over the bomb.
A soccer ball is kicked with a velocity
of 25 m/s at an angle of 45° above the
horizontal. What is the vertical
component of its acceleration as it
travels along its trajectory?
A soccer ball is kicked with a velocity
of 25 m/s at an angle of 45° above the
horizontal. What is the vertical
component of its acceleration as it
travels along its trajectory?
-9.80 m/s2
A stone is thrown horizontally from
the top of a tower at the same instant
a ball is dropped vertically. Which
object is hits the ground first?
A stone is thrown horizontally from
the top of a tower at the same instant
a ball is dropped vertically. Which
object is hits the ground first?
Neither, they hit at the same time.
A stone is thrown horizontally from
the top of a tower at the same instant
a ball is dropped vertically. Which
object is traveling faster when it hits
the level ground below?
A stone is thrown horizontally from
the top of a tower at the same instant
a ball is dropped vertically. Which
object is traveling faster when it hits
the level ground below?
The stone.
An Olympic athlete throws a javelin at
four different angles above the
horizontal, each with the same speed:
30° 40° 60° 80° . Which two throws
cause the javelin to land the same
distance away?
An Olympic athlete throws a javelin at
four different angles above the
horizontal, each with the same speed:
30° 40° 60° 80° . Which two throws
cause the javelin to land the same
distance away?
30° and 60°
A bullet is fired horizontally, and at
the same instant a second bullet is
dropped from the same height.
Ignore air resistance. Compare the
times of fall of the two bullets.
A bullet is fired horizontally, and at
the same instant a second bullet is
dropped from the same height.
Ignore air resistance. Compare the
times of fall of the two bullets.
The times are the same.
Ignoring air resistance, the
horizontal component of a
projectile’s velocity
A) is zero.
B) remains constant.
C) continuously increases.
D) continuously decreases.
Ignoring air resistance, the
horizontal component of a
projectile’s velocity
B) remains constant.
Ignoring air resistance, the horizontal
component of a projectile’s
acceleration
A)is zero.
B) remains a non-zero constant.
C) continuously increases.
D) continuously decreases.
Ignoring air resistance, the
horizontal component of a
projectile’s acceleration
A)is zero.