1. What is the value of the acceleration due to gravity near the surface of eart
ID: 1969554 • Letter: 1
Question
1. What is the value of the acceleration due to gravity near the surface of earth?a) -9.8 ft/s2 c) -9.8 m/s2
b) 9.8 m/s d) 32.2 ft/s
___2. The acceleration due to gravity acts:
a) upward c) depending on the motion of the object
b) downward d) toward outer space
___3. A bullet is fired at an angle of 45o. Neglecting air resistance, what is the direction of acceleration
during the flight of the bullet?
a) upward c) dependent on the initial velocity
b) downward d) at a 45o angle
___4. A rocket is fired at 30o. If the initial horizontal velocity (vxi) is 326 m/s, what is the initial
vertical velocity (vyi)?
a) 188 m/s c) 380 m/s
b) 330 m/s d) 250 m/s
___5. A golfer drives her golf ball from the tee down the fairway in a high arcing shot. When the ball is
at the highest point of its flight:
a) the velocity and acceleration are both zero
b) the x-velocity is zero and the y-velocity is zero
c) the x-velocity is non-zero and the y-velocity is zero
d) the velocity is non-zero and the acceleration is zero
___6. In the “Bull’s Eye” lab the ball rolled off the table. What was the initial vertical (vyi) velocity of
the ball when it left the table?
a) depends on the initial x-velocity c) unknown; it must be measured
b) depends on the size of the ball d) 0 m/s
___7. A soccer ball is kicked at a 55o angle with an initial velocity of 8 m/s. What is the vertical (vyf)
velocity of the ball as it hits the ground?
a) 8 m/s c) –8 m/s
b) –6.6 m/s d) cannot be determined from given information
___8. For a projectile, what is the acceleration in the x-direction?
a) depends on initial velocity c) depends on how long it is in the air
b) 0 m/s2 d) depends on y-acceleration
___9. A bullet is fired horizontally from a gun. At the same time a similar bullet is dropped from the
same height. The fired bullet will:
a) hit the ground first c) hit at the same time as the dropped bullet
b) hit the ground second d) never hit the ground
___10. A 10-kg weight and a 100-kg weight of the same size are dropped from the roof of a building.
Which will hit the ground first? (Neglect air resistance)
a) they will hit at the same time c) the 10-kg weight
b) the 100-kg weight d) cannot be determined from given information
Explanation / Answer
1) depends on axis choice but generally c 2) b 3)b 4)d 5)c 6) I can't comment on your lab but based on what you said d 7)b 8)b 9)c 10)a
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