This means the object

A) travels 2.0 m in every second.

B) is traveling at 2.0 m/s.

C) is decreasing its velocity by 2.0 m/s every second.

D) is increasing its velocity by 2.0 m/s every second.

A) The acceleration is constantly increasing.

B) The acceleration is constantly decreasing.

C) The acceleration is a constant non-zero value.

D) The acceleration is equal to zero.

A) is upward

B) is downward

C) is zero

D) reverses from upward to downward

E) reverses from downward to upward

and experience no significant air resistance. If the 10-kg rock reaches a maximum height h, what maximum height will the 20-kg ball reach?

A) h/4

B) h/2

C) h

D) 2h

E) 4h

When they reach the ground below

A) the green ball will be moving faster than the blue ball.

B) the blue ball will be moving faster than the green ball.

C) the two balls will have the same speed.

A) a horizontal straight line.

B) a vertical straight line.

C) a straight line making an angle with the time axis.

D) a parabolic curve.

A) the distance traveled.

B) velocity.

C) acceleration.

D) displacement.

A) moving with constant non-zero speed.

B) moving with constant non-zero acceleration.

C) at rest.

D) moving with increasing acceleration.

A) 66.0 km/h

B) 67.0 km/h

C) 68 km/h

D) 69.0 km/h

A) 260 mi/h

B) 270 mi/h

C) 275 mi/h

D) 280 mi/h

A) 1500 m/s2

B) 1000 m/s2

C) None of the above

A) -13 m/s2

B) -14 m/s2

C) 13 m/s2

D) 15 m/s2 E) None of the above

A) 15 s

B) 30 s

C) 45 s

D) 4.2 s

A) 16 m

B) 24 m

C) 42 m

D) 84 m

value use 2nd kinematic equation again)

A) 30 m

B) 39 m

C) 48 m

D) 57 m

A) 69 m

B) 207 m

C) 41 m

D) 117 m

velocity of the stone after 0.50 s? (Hint : a = -g Use fin_vel = init_velocity – g

times time_interval)

A) 2.1 m/s

B) 4.9 m/s

C) -2.1 m/s

D) -4.9 m/s

E) 0.00 m/s

where the acceleration due to gravity is 3.5 m/s2 and there is no atmosphere. What is the speed of the hammer after 8.0 s? (Hint : Use a = -g then Use fin_vel =

init_velocity – g times time_interval)

A) 7.0 m/s

B) 14 m/s

C) 21 m/s

D) 64 m/s

a distance of 120 m. How fast was the car moving when it was 60.0 m past the point where the brakes were applied? (Hint: use third kinematic equation of motion

v_fin^2 = v_init^2 – 2 times a times displacement and find a which will be -2.8units and then using that same acceleration use displacement =60 in the same equation and find the speed of the car at 60 m past the initial point).

A) 22.5 m/s

B) 18.4 m/s

C) 15.0 m/s

D) 12.1 m/s

E) 9.20 m/s

velocity of the stone after 0.50 s?

A) 2.1 m/s

B) 4.9 m/s

C) -2.1 m/s

D) -4.9 m/s

E) 0.00 m/s

where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere. How long does it take for the laser to reach the maximum height? (Hint : Use a = -g then Use fin_vel = init_velocity – g times time_interval)

A) 8.0 s

B) 11 s

C) 14 s

D) 16 s

where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere. What is the maximum height reached by the laser?

A) 8.0 m

B) 18 m

C) 48 m

D) 144 m

ruler to fall before you catch it, assuming negligible air resistance? (USe : displacement starting with zero velocity = 1/2 g time t^2 )

A) At least 3.0 cm

B) At least 4.9 cm

C) At least 6.8 cm

D) At least 9.8 cm

resistance?(USe : final_vel = init_vel – g times t and the required to go up is same as time

required to go down )

A) 3.7 s

B) 1.8 s

C) 1.1 s

D) 0.6 s

to reach a height of 7.0 m on the way up? Neglect air resistance (so acceleration a = -g). (Use second kinematic equation of motion, g=9.8m/s2 and solve for t)

A) 0.52 s

B) 1.2 s

C) 2.4 s D) 3.1 s

E) 4.2 s

displacement : Final velocity is 0 so for the first case we get 0 = v_init^2 +2times a x d ; For the second one velocity is double so we get 0 = (2 times v_init)^2 + 2a times New_d : comparing the two we get new d = 4 times d))

A) d

B) 2d

C) d

D) 4d

E)2 d

D before stopping, how far does car A travel before stopping?

A) 4D

B) 2D

C) D

D) D/2

E) D/4

downward has a negative magnitude.

A) True

B) False

A) is equal to 2.0 m.

B) could be as small as 2.0 m or as large as 12 m.

C) is equal to 12 m.

D) is equal to 8.6 m.

A) It is impossible to tell because we do not know their masses.

B) the stone

C) the ball

D) Both are traveling at the same speed.

of the plane will

A) be behind the package.

B) be directly over the package.

C) be in front of the package.

D) depend on the speed of the plane when the package was released.

A) in the forward direction

B) in the backward direction

C) outward away from the earth

D) inward toward the earth

E) The acceleration is zero because the speed is constant.

B) 55.0 m C) 0.00 m

D) 74.0 m E) 24.2 m

(b) 53.1°

respect to poise y-axis so it will be 90 – ! = …)

(a) What is the magnitude of this vector?

(b) What angle does this vector make with the positive +y-axis.

displacement vector?

A) 0 km

B) 20km

C) 28km

D) 40km

A) 14 m

B) 16 m

C) 20 m

D) 24 m

trajectory if air resistance is negligibly small and g = 9.80 m/s2? (Hint : the vertical component of the velocity is 3.13 sin 30 and then use that as the initial vertical

velocity and 0 as the final velocity since the ball stops at the max height. )

A) 0.160 s

B) 0.282 s

C) 0.313 s

D) 0.441 s

This means the object

A) travels 2.0 m in every second.

B) is traveling at 2.0 m/s.

C) is decreasing its velocity by 2.0 m/s every second.

D) is increasing its velocity by 2.0 m/s every second.

(b) 27 m

(a) How high is the bridge from the water below?

(b) How far horizontally does the rock travel before striking the water?

(b) 0.505 s

gravity is 9.80 m/s2.

(a) How far from the base of the table will it strike the floor?

(b) How long will it be in the air?

(b) About 31 m/s

(a) What will be the horizontal component of the velocity of the balloon just before it hits the ground?

(b) What will be the magnitude of the vertical velocity of the balloon just before it hits the ground? (Hint : Find time to reach the ground first. Vertical velocity = g

times time_to_reach the ground)

two packages land on the ground if air resistance is negligible?

A) 100 m

B) 160 m

C) 180 m

D) 320 m

A) 35 m/s

B) 9.8 m/s

C) 20 m/s

D) 4.9 m/s

E) 70 m/s

above the horizontal on an airless planet where g = 10.0 m/s2. What is the horizontal component of its velocity after 4.0 s?

A) 150 m/s

B) 35 m/s

C) 130 m/s

D) 75 m/s

E) 38 m/s

leave the ground?

A) 0.50 s

B) 0.88 s

C) 1.1 s

D) 2.5 s

E) 0.54 s

plane relative to the ground is

A) 157 m/s at an angle 7.31° south of east.

B) 157 m/s at an angle 7.31° east of south.

C) 155 m/s at an angle 7.36° south of east.

D) 155 m/s at an angle 7.36° east of south.

E) 157 m/s at an angle 7.36° south of east.

A) 5.3 m/s

B) 6.0 m/s

C) 8.0 m/s

D) 10.0 m/s