Physics
posted by April .
A 8.22 kg block initially at rest is pulled to the
right along a horizontal, frictionless surface by
a constant, horizontal force of 16.8 N.
Find the speed of the block after it has
moved 2.3 m.
Answer in units of m/s

Physics 
drwls
First compute the acceleration,
a = F/m = 2.044 m/s^2
V = s 
Physics 
drwls
First compute the acceleration,
a = F/m = 2.044 m/s^2
Then use
V(final) = sqrt(2 a X)
where X is the distance travelled.
You could also use:
Work done on block = F*X
= final kinetic energy,
= (1/2)M Vfinal^2.
and then solve for Vfinal.
Vfinal = sqrt[2*(F/M)*x]
You will get the same result.
Respond to this Question
Similar Questions

Physics
A 3.3 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 3.2 m. Answer in units of m/s. 
11th grade
A 7.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 2.8 m. Answer in units of m/s 
physics
A 9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 18.8 N. Find the speed of the block after it has moved 3.3 m. Answer in units of m/s. 
physics
A 3.2 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 19.4 N. Find the speed of the block after it has moved 2.5 m. Answer in units of m/ 
Physics
A 3.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 13.5 N. Find the speed of the block after it has moved 4.22 m. Answer in units of m/s 
Physics
A 3.6 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 18.2 N. Find the speed of the block after it has moved 2.7 m. Answer in units of m/s 
physics
8) A 6.0kg block initially at rest is pulled to the right along a frictionless, horizontal surface by a constant horizontal force of 12 N. Use the workkinetic energy theorem to find the block’s speed after it has moved 3.0 m. 
Physics
A 5.9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 12.1 N. Find the speed of the block after it has moved 2.6 m. 
Physics
A 8.9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 12.1 N. Find the speed of the block after it has moved 3.3 m. Answer in units of m/s 
physics
A 3.1 kg block initially at rest is pulled to the right along a horizontal frictionless surface by a constant horizontal force of 16.6 N. Find the speed after it has moved 3.8m.