Pam has a mass of 47.1 kg and she is at rest on
smooth, level, frictionless ice. Pam straps on
a rocket pack. The rocket supplies a constant
force for 15.3 m and Pam acquires a speed of
59.2 m/s.
What is the magnitude of the force?
Answer in units of N
The acceleration of gravity is...
A(n) 0.445 kg football is thrown with a speed
of 15.1 m/s. A stationary receiver catches the
ball and brings it to rest in 0.012 s.
What is the magnitude of the impulse de-
livered to the ball?
Answer in units of kg · m/s
f=m*a
Δp=m*Δv
i used f= ma since a= Δv/t
i got F=...
OH i think i got it now...
okay so i used 55*sin(33) to find the y component of the velocity. then used the equation v^2= u^2+2as
v= 0
u= 55 m/s
a= -9.8 m/s^2
and using this got a height of 154.34 meters.
Can you tell me if this is correct?
We just started this unit and I'm lost...
An arrow is shot at 33◦ angle with the horizontal. It has a velocity of 55 m/s.
The acceleration of gravity is 9.8 ms^-2
How high will the arrow go?
Answer in units of m
I know that S= 1/2 at^2+ut
and all the rules of the basic trig...
The problem is as follows: A mass is held by two cables attached to a wall and ceiling. The mass M is 5 kg and the angle between the string and the vertical is θ= 25°
a) Determine the tension in the cable attached to the ceiling.
I know that the answer is 55 N (because she posted the...
Remember that a scale records the value of
the normal force, not a person’s actual weight.
Draw a FBD. Rotate your coordinate system.
A 61 kg student weighs himself by standing
on a scale mounted on a skateboard that is
rolling down an incline, as shown. Assume
there is no friction so...