A student pushes a loaded sled with a mass of 240kg for a distance of 2.3 m on a frictionless pond of ice. If she pushes with a constant force of 75N, how fast will the sled go if it starts from rest?
I don't understand it or what equation to use. Soo confused.
IB Physics sucks. -___-
What is the process of solving it and what is the answer?
Thanks.
I don't understand it or what equation to use. Soo confused.
IB Physics sucks. -___-
What is the process of solving it and what is the answer?
Thanks.
-
There is no friction, so all the 75N. applied to the 240kg. sled will accelerate it.
Acceleration = (f/m), = 75/240, = 0.3125m/sec^2.
Velocity after 2.3m = sqrt. (2ad), = 1.199 m/sec.
As the question only has 1 decimal place in it, I suppose you make that 1.2 m/sec.
Acceleration = (f/m), = 75/240, = 0.3125m/sec^2.
Velocity after 2.3m = sqrt. (2ad), = 1.199 m/sec.
As the question only has 1 decimal place in it, I suppose you make that 1.2 m/sec.
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F=m*a
75=240*a
a=75/240 m/s^2
Use eqn:
v^2=u^2+2as
v^2=0 + 2*(75/240)*2.3
Solve for v.
75=240*a
a=75/240 m/s^2
Use eqn:
v^2=u^2+2as
v^2=0 + 2*(75/240)*2.3
Solve for v.