Liner motion A) A projectile has an initial horizontal velocity of 20 m/s at the edge...
Liner motion
A) A projectile has an initial horizontal velocity of 20 m/s at the edge of a rooftop. Find the horizontal and vertical components of its velocity after 2 s.
B) A truck traveling at 60 km/h brakes to a stop in 50 m. What were the average acceleration and stopping time?
C) An arrow is shot vertically upward with an initial velocity of 80 25 m/s. What is its maximum height?
D) A hammer is thrown vertically upward to the top of a roof 16 m high. What minimum initial velocity was required?
E) A small rocket leaves its pad and travels a distance of 40 m
vertically upward before returning to the Earth 6 s after it was
launched. What
was the average velocity for the trip?
Homework Answers
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Liner
motion
A) A projectile has an initial horizontal velocity of 20 m/s at
the edge...
2. For a projectile launched with an upward initial velocity, the horizontal velocity is always and...
2. For a projectile launched with an upward initial velocity, the horizontal velocity is always and the vertical velocityHint: Pretend the initial vertical velocity is 3m/s and the initial horizontal velocity is 2 m/s. How do these numbers change as the projectile approaches the peak and then approaches landing? a) Constant, Decreases then Increases b) Zero, Is Lowest at the Apex c) Constant, Always Decreases d) Positive, Decreases then Increases
A projectile is launched with an initial velocity of 40 m/s at 60° above the horizontal....
A projectile is launched with an initial velocity of 40 m/s at 60° above the horizontal. Neglecting air resistance, what is horizontal component of the projectile's acceleration?
Projectile Motion: An object is fired into a projectile with an initial velocity of 250 m/s at an angle of 60° with resp...
Projectile Motion: An object is fired into a projectile with an initial velocity of 250 m/s at an angle of 60° with respect to the horizontal. a) What is the maximum height it reaches? b) What is the maximum horizontal distance it reaches? c) What is the time of flight of the particle? d) What is its velocity as it reaches the ground? e) Locate the object after 6 seconds.
9) A 2 kg object is thrown vertically upward with an initial velocity of 10 m/s....
9) A 2 kg object is thrown vertically upward with an initial velocity of 10 m/s. (a) What is its velocity at a point halfway to the maximum height it will attain? (a) What is the total time required for it to return to its initial position? (c) What is its acceleration at the maximum height? (d) What is its average speed during the complete trip? (neglect air resistance
A projectile is launched at an initial velocity of 150i+200j m/s (vector) over a horizontal surface....
A projectile is launched at an initial velocity of 150i+200j m/s (vector) over a horizontal surface. The object’s mass is 120kg. At t=5.0s, the projectile explodes to 3 pieces: a 35 kg piece with a velocity of -15i+25j m/s, a 60 kg piece with a velocity of 80i m/s and a 25 kg piece with velocity 549i+685j m/s. a) determine the impulse that acted on the 35 kg piece during the explosion B) assuming that the average force on the...
A projectile is launched with an initial speed of 40 m/s at an angle of 25°...
A projectile is launched with an initial speed of 40 m/s at an angle of 25° above the horizontal. (a) What are the horizontal and the vertical components of initial velocity. (b) Find the time taken by the projectile to reach the highest point and its height at the highest point. (c) How long does it take the projectile to hit the ground after launch and how far from the starting point it hits the ground. (d) Calculate the velocity...
A cannon fires a projectile with an initial velocity of 300 m/s at 61.0° above the...
A cannon fires a projectile with an initial velocity of 300 m/s at 61.0° above the horizontal. The projectile impacts a hillside 40.0 s after firing. Let the +x-direction be directly ahead of the cannon and the +y-direction be upward. Find the x- and y-coordinates of the projectile's impact point, relative to its firing point (in m). x= m y= m
P1.A cannonball is shot at an angle of 45" with an initial velocity vo. This is...
P1.A cannonball is shot at an angle of 45" with an initial velocity vo. This is calculated to exactly land at point B in a projectile trajectory. However, the people at point B launched a rocket with an initial ve locity at 20 from the horizontal sometime after the cannonball launched. The rocket, which will intercept the cannonball at some vertical distance from the ground level, is in a linear path, Find (a) horizontal distance between point A and Point...
47. An object undergoing projectile motion travels 1.00 x 102 m in the horizontal direction before...
47. An object undergoing projectile motion travels 1.00 x 102 m in the horizontal direction before returning to its initial height. If the object is thrown initially at a 30.0° angle from the horizontal, determine the x component and the y component of the initial velocity. (Neglect any effects due to air resistance.) Example 3-7
Problem 7 4.A projectile of mass 9.6 kg is launched from the ground with an initial velocity of 12.4 m/s at an angl...
Problem 7 4.A projectile of mass 9.6 kg is launched from the ground with an initial velocity of 12.4 m/s at an angle of 54° above the horizontal (see the figure). At some time after its launch, an explosion splits the projectile into two pieces. One piece, of mass 6.5 kg, is observed at 1.42 seconds after the launch to be at a height of 5.9 m and at a horizontal distance of 13.6 m from the launch point. Find...
2. For a projectile launched with an upward initial velocity, the horizontal velocity is always and the vertical velocityHint: Pretend the initial vertical velocity is 3m/s and the initial horizontal velocity is 2 m/s. How do these numbers change as the projectile approaches the peak and then approaches landing? a) Constant, Decreases then Increases b) Zero, Is Lowest at the Apex c) Constant, Always Decreases d) Positive, Decreases then Increases
P1.A cannonball is shot at an angle of 45" with an initial velocity vo. This is calculated to exactly land at point B in a projectile trajectory. However, the people at point B launched a rocket with an initial ve locity at 20 from the horizontal sometime after the cannonball launched. The rocket, which will intercept the cannonball at some vertical distance from the ground level, is in a linear path, Find (a) horizontal distance between point A and Point...
47. An object undergoing projectile motion travels 1.00 x 102 m in the horizontal direction before returning to its initial height. If the object is thrown initially at a 30.0° angle from the horizontal, determine the x component and the y component of the initial velocity. (Neglect any effects due to air resistance.) Example 3-7
Problem 7 4.A projectile of mass 9.6 kg is launched from the ground with an initial velocity of 12.4 m/s at an angle of 54° above the horizontal (see the figure). At some time after its launch, an explosion splits the projectile into two pieces. One piece, of mass 6.5 kg, is observed at 1.42 seconds after the launch to be at a height of 5.9 m and at a horizontal distance of 13.6 m from the launch point. Find...
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