2-D Kinematics Question Preview (ID: 54787)
Horizontal And Vertical Motion, Solving Kinematics Equations,.
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A rock is thrown straight up from the edge of a cliff. The rock reaches the maximum height of 15 m above the edge and then falls down to the bottom of the cliff 35 m below the cliff. What is the traveled distance of the rock?
a) 30 m
b) 35 m
c) 50 m
d) 65 m
A rock is thrown straight up from the edge of a cliff. The rock reaches the maximum height of 15 m above the edge and then falls down to the bottom of the cliff 35 m below the cliff. What is the displacement of the rock?
a) - 15 m
b) - 35 m
c) 50 m
d) 65 m
A car accelerates from rest at a constant rate 5 m/s2. Which of the following statements is true?
a) The car travels 5 m in every second
b) The car decreases its velocity 5 m/s in every second
c) The car increases its velocity 5 m/s in every second
d) The car's velocity doesn't change
A rock is thrown straight up with twice the initial velocity of another. How much higher will the first rock be at its apex?
a) 2 times
b) 4 times
c) 16 times
d) The rocks will reach the same apex
A student drops a pebble from the edge of a vertical cliff. The pebble hits the ground 4 s after it was dropped. What is the speed of the pebble just before it hits the ground?
a) 20 m/s
b) 40 m/s
c) 60 m/s
d) 80 m/s
A student drops a pebble from the edge of a vertical cliff. The pebble hits the ground 4 s after it was dropped. What is the height of the cliff?
a) 20 m
b) 40 m
c) 60 m
d) 80 m
A marble launcher shoots a marble horizontally from the height of 0.2 m above a horizontal floor. The marble lands on the floor 5 m away from the launcher. How long did the marble stay in the air?
a) 0.1 s
b) 0.2 s
c) 0.3 s
d) 0.4 s
A marble launcher shoots a marble horizontally from the height of 0.2 m above a horizontal floor. The marble lands on the floor 5 m away from the launcher. What is the initial speed of the marble?
a) 5 m/s
b) 10 m/s
c) 15 m/s
d) 25 m/s
When a projectile reaches the highest point the vertical component of the acceleration is:
a) Greater than g
b) Positive g
c) Negative g
d) Zero
When a projectile reaches the highest point the horizontal component of the acceleration is:
a) Less than g
b) Positive g
c) Negative g
d) Zero
An object is thrown in horizontal with an initial velocity v0= 5 m/s from the roof of a building 40 m tall. How much later does it hit the ground?
a) 4 s
b) 10 s
c) 2.2 s
d) 2.82 s
An object is thrown in horizontal with an initial velocity v0= 10 m/s from the roof of a building 20 m tall. How far from the building does it hit the ground?
a) 5 m
b) 10 m
c) 15 m
d) 20 m
A student wants to hit a target with a rubber band ball from 1.8 meters away. If he throws the ball at a speed of 6 m/s and the target is at the exact same height as where the ball is thrown, what angle from the horizontal must he throw the ball?
a) 0 degrees
b) 15 degrees
c) 30 degrees
d) 35 degrees
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