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Mechanics | Relativity
A dragster and driver together have mass
894.2 kg . The dragster, starting from rest,
attains a speed of 25.8 m/s in 0.56 s.
Find the average acceleration of the dragster during this time interval.
Answer in units of m/s^2
What is the size of the average force on the
dragster during this time interval?
Answer in units of N
894.2 kg . The dragster, starting from rest,
attains a speed of 25.8 m/s in 0.56 s.
Find the average acceleration of the dragster during this time interval.
Answer in units of m/s^2
What is the size of the average force on the
dragster during this time interval?
Answer in units of N
Mechanics | Relativity
A dragster and driver together have mass
894.2 kg . The dragster, starting from rest,
attains a speed of 25.8 m/s in 0.56 s.
Find the average acceleration of the dragster during this time interval.
Answer in units of m/s^2
Assume the driver has a mass of 73.2 kg .
What horizontal force does the seat exert
on the driver?
Answer in units of N
894.2 kg . The dragster, starting from rest,
attains a speed of 25.8 m/s in 0.56 s.
Find the average acceleration of the dragster during this time interval.
Answer in units of m/s^2
Assume the driver has a mass of 73.2 kg .
What horizontal force does the seat exert
on the driver?
Answer in units of N
Mechanics | Relativity
An archer shoots an arrow with a speed of 200 ft/s, if the arrow travels 2 ft before being shoot, what was its acceleration (supposing it's constant)? Express in m/s^2... I got -30.78 m/s^2, is that correct?
Mechanics | Relativity
The water drops fall at regular intervals from a tap 5m above the ground .The third is leaving he tap at instant the first drop touches the ground.How far above the ground is the second drop at that instant ???????????? take g=10
Mechanics | Relativity
a rocket is fired straight up in the air at 160m/s. How long has it been in the air when its velocity is 23 m/s downward?
Mechanics | Relativity
a sled slides down a hill and accelerates at 3.1 m/s2. if it started from rest, how far has it traveled in 9.6 seconds?
Mechanics | Relativity
a person throws a ball up into the air at an initial speed of 22 m/s. what is the balls velocity 4.1 seconds after it is thrown
Mechanics | Relativity
A ball kept on a wall is pushed horizontally with
certain velocity and allowed to move under gravity. Such a
motion is two-dimensional motion with ball covering
displacements in both x and y-directions. But both the x & y
direction motions are independent of each other. Hence,
motion in x-direction can be considered as similar to straight
line motion with no acceleration. Motion in y-direction can be
considered as free fall under gravity.
In the figure shown, ball is pushed horizontally from a
height of 19.6 m, with initial velocity as 10 m/s
[Take g = 9.8 m/s2]
10. The horizontal displacement of projectile after 1 sec.
certain velocity and allowed to move under gravity. Such a
motion is two-dimensional motion with ball covering
displacements in both x and y-directions. But both the x & y
direction motions are independent of each other. Hence,
motion in x-direction can be considered as similar to straight
line motion with no acceleration. Motion in y-direction can be
considered as free fall under gravity.
In the figure shown, ball is pushed horizontally from a
height of 19.6 m, with initial velocity as 10 m/s
[Take g = 9.8 m/s2]
10. The horizontal displacement of projectile after 1 sec.
Mechanics | Relativity
An object whose momentum is 200 kg-m/s has a kinetic energy of 1000J. What is its mass?
Mechanics | Relativity
Forces of 8.85 N and 2.21 N act at right angles on a stack. What is the mass of the stack if it accelerates at a rate of 4.4 m/s^2?
