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Rash
Questions (15)
Two identical wheels are moving on horizontal surfaces. The center of mass of each has the same linear speed. However, one wheel
1 answer
1,211 views
Each wheel is a solid disk of mass 2.0 kg. On the horizontal surfaces the center of mass of each wheel moves with a linear speed
1 answer
785 views
Question on Torque.
is T=Fl the same as T=FD?
1 answer
588 views
What is the weight density of water?
1 answer
420 views
Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The
1 answer
1,505 views
A woman stands on a scale in a moving elevator.
Her mass is 54.0 kg, and the combined mass of the elevator and scale is an
1 answer
781 views
The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force Fsm that the sun exerts on
2 answers
1,289 views
A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be
1 answer
649 views
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 45
5 answers
2,438 views
Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 511 km above the earth's
1 answer
1,957 views
A woman is riding a Jet Ski at a speed of 28 m/s and notices a seawall straight ahead. The farthest she can lean the craft in
1 answer
3,551 views
A woman is riding a Jet Ski at a speed of 20 m/s and notices a seawall straight ahead. The farthest she can lean the craft in
0 answers
540 views
What does this mean when dealing with banked curves?
tan(theta)=v^2/rg
0 answers
558 views
A woman is riding a Jet Ski at a speed of 23 m/s and notices a seawall straight ahead. The farthest she can lean the craft in
0 answers
508 views
A wheel rotates without friction about a stationary horizontal axis at the center of the wheel.A constant tangential force of
1 answer
1,973 views
Answers (2)
Let me show my process: v= 45 m/s vo= 0 m/s t= 7.0 s m = 5.5 x 10^3 kg a=? F=? To solve for acceleration, I've used a kinematics equation: v=vo+at a= (45 m/s) / (7.0 s) = 6.428 m/s^2 Then we use Newton's 2nd law: F=ma F= (5.5 x 10^3 kg)(6.428 m/s^2) F is
How am I incorrect though? I've used a kinematics equation v=vo+at, which resulted in me getting my acceleration and plugged in Newton's 2nd law as well as multiplying the acceleration by the given mass, resulting in an answer similar to this, only I
