PreAP Physics
posted by Mandy .
Pam has a mass of 40Kg and she is at rest on smooth, level, frictionless ice. Pam Straps on a rocket pack. The rocket supplies a constant force for 22m and Pam acquires a speed of 62 m/s.
A) What is the magnitude of the force?
B) What is Pam's final Kinetic Energy?

First compute the time t that the force acts.
Vaverage*t = Vfinal*t/2
= (31 m/s)*t = 22 m
t = 0.7097 s
a = Vfinal/t = 62/0.7097 = 87.4 m/s^2
F = M a = ?
Final KE = (1/2) M Vfinal^2
(That part ie easy!) 
To: DRWLS,
I got 3500 Newtons for part A? What am I doing wrong? 
I get about the same answer for Part A.

I did not use time in my equation. I used Force * Distance= change KE for Part A and got the 3500 Newtons.
What am I doing wrong? 
There is nothing wrong with your answer or method that I can see. I got the same answer (to three significant fgures) with a different method.
Respond to this Question
Similar Questions

math
Laura and Pam decide to meet at the library. They both leave the house on their bikes at 8 a.m. Laura pedals 5phm faster that Pam and waits 12 minutes for her friend who pedals at a rate of 10mph. After spending 2 hours at the library … 
Physics
Pam, wearing a rocket pack, stands on frictionless ice. She has a mass of 44 kg. The rocket supplies a constant force for 22.0 m, and Pam acquires a speed of 62.5 m/s. Assume that air resistance is negligible. (a) What is the magnitude … 
Physics
Pam has a mass of 44.0 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 22.0 m and Pam acquires a speed of 58.0 m/s. 
personal Finance
Pam Thompson is offered a salary of 28,000. The company gives annual raises of 6 percent. What would be pam,s salary during her fifth year on the job. 
math
pam is offered a salary of 28,000 a year for 30 years with annual raises of 6 % what would be pam's salary during her 5th year on the job 
physics
Pam has a mass of 33.0 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 15.0 m and Pam acquires a speed of 60.0 m/s. (a) What is the magnitude of the force? 
math
sam, pam, ken, and jen wrote each of their names on a slip of paper and placed them in a bowl.Sam was the first to randomly select a name from the bowl. What is the probability that he will select his own name? 
Mathematics
Pam is 14 and her dad is 37. In how many years will Pam's dad be twice as old as she will be? 
Math
The Look Alike Doll Company makes dolls that resemble people. Pam's mom is having a doll made to look alike Pam. Pam is 5 feet tall. The doll will be 2 1/2 feet tall. What is the ratio of the doll's height to Pam's height? 
Physics
Pam has a mass of 35.5 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 29.2 m and Pam acquires a speed of 64.1 m/s. What is the magnitude of the force?