Serway_CP_poll_ch02

Serway_CP_poll_ch02 - A parachutist jumps out of an...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
A parachutist jumps out of an airplane and accelerates with pulls the parachute cord and after a 4-second deceleration, descends at 10 m/s for 60 seconds, reaching the ground. From what height did the parachutist jump? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 874 m 2. 1136 m 3. 1524 m 4. 1750 m
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A 50-gram superball traveling at 25 m/s is bounced off a brick event. If the ball is in contact with the wall for 3.5 ms, what is the average acceleration of the ball during this time interval? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 13,428 m/s 2 2. 6,715 m/s 2 3. 857 m/s 2 4. 20 m/s 2
Background image of page 2
A drag racer starts from rest and accelerates at 10 m/s 2 for the entire distance of 400 m (1/4 mile). What is the velocity of the race car at the end of the run? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 45 m/s 2. 90 m/s 3. 135 m/s 4. 180 m/s
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A basketball player can jump 1.6 m off the hardwood floor. With what upward velocity did he leave the floor? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 1.4 m/s 2. 2.8 m/s 3. 4.2 m/s 4. 5.6 m/s
Background image of page 4
A Cessna aircraft has a lift-off speed of 120 km/hr. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 240 m? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 2.32 m/s 2 2. 3.63 m/s 2 3. 4.64 m/s 2 4. 5.55 m/s 2
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A water rocket, launched from the ground, rises vertically with an acceleration of 30 m/s 2 runs out of "fuel." Disregarding air resistance, how high will the rocket rise? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 15 m 2. 31 m 3. 61 m 4. 121 m
Background image of page 6
Two stones are thrown from the top edge of a building with a speed of 20 m/s, one straight down and the other straight up. The first one hits the street in a time t 1 . How much later is it before the second stone hits? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 5 s 2. 4 s 3. 3 s 4. not enough information is given to work this problem
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
An x vs. t graph is drawn for a ball moving in one velocity of the ball is zero. We can be positive that, at t = 5 s, 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. the slope of the curve is non-zero. 2. the ball has stopped. 3. the acceleration is constant. 4. the curve is at x = 0, t = 0.
Background image of page 8
At the top of a cliff a 100 m high, a rock is thrown upward with velocity 15 m/s. How much later should a second rock be dropped from rest so both stones arrive simultaneously at the bottom of the cliff?
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 40

Serway_CP_poll_ch02 - A parachutist jumps out of an...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online