Learning Materials
Features
Discover
Chapter 3: Q4. (page 67)
A bullet fired from a rifle begins to fall
(a) as soon as it leaves the barrel
(b) after the air friction reduces its speed
(c) not at all if air resistance is ignored.
A bullet fired from a rifle begins to fall (a) as soon as it leaves the barrel.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Apollo astronauts took a ‘nine iron’ to the moon and hit a golf ball about 180 m. Assuming that the swing launch angle and so on were the same as on the earth, where the same astronauts could hit it only 32 m, estimate the acceleration due to gravity on the surface of the moon. (Neglect the air resistance in both cases, but on the moon, there is none.)
A shot-putter throws the “shot” (mass = 7.3 kg) with an initial speed ofat aangle to the horizontal. Calculate the horizontal distance travelled by the shot if it leaves the athlete’s hand at a height ofabove the ground.
An athlete performing a long jump leaves the ground at aangle and lands 7.80 m away. (a) What was the takeoff speed? (b) If this speed were increased by just 5.0%, how much longer would the jump be?
A baseball is hit high and far. Which of the following options is true? At the highest point,
(a) the magnitude of the acceleration is zero.
(b) the magnitude of the velocity is zero.
(c) the magnitude of the velocity is the slowest.
(d) more than one of the above is true.
(e) none of the above is true.
A hunter is aiming horizontally at a monkey who is sitting in a tree. The monkey is so terrified when it sees the gun that it falls off the tree. At that very instant, the hunter pulls the trigger. What will happen?
(a) The bullet will miss the monkey because the monkey falls down while the bullet speeds straight forward.
(b) The bullet will hit the monkey because both the monkey and the bullet are falling downward at the same rate due to gravity.
(c) The bullet will miss the monkey because, although both the monkey and the bullet are falling down due to gravity, the monkey is falling faster.
(d) It depends on how far the hunter is from the monkey.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App