Determine Mass from Net Force, distance, and velocity

  • Thread starter Kupopopo
  • Start date
  • #1
1
0
First time in these forums so nice to meet everyone

Homework Statement



A dynamics cart is pulled from rest by a net force of 1.2M [Forward]. The cart moves 6.6m, reaching a velocity of 3.2m/s [Forward].


Homework Equations



F=ma


The Attempt at a Solution



I tried using the formula V(final)^2 = V(initial)^2 + 2*a*d to get acceleration and plug it into F=ma to find mass and got 5kg but the textbook says that the answer is 1.5kg
 

Answers and Replies

  • #2
12,811
6,693
I assume vi = 0 in your calculation so that vf^2 = 2 . a . d with d=6.6m

what did you get for a?

given a you should get what your book says.
 
  • #3
157
0
Possibly you made an error in your calculations. As jedishrfu said, if you plug in all the known values in, you should get 1.5kg no problem.
 

Related Threads on Determine Mass from Net Force, distance, and velocity

Replies
21
Views
6K
Replies
5
Views
307
Replies
12
Views
5K
Replies
11
Views
2K
Replies
10
Views
5K
Replies
13
Views
986
Replies
2
Views
4K
Replies
2
Views
60K
Replies
4
Views
94K
Replies
6
Views
390
Top