# physics

A block of mass 3 kg initially at rest is pulled along a friction less horizontal surface with a force of 4N. The speed of the block at t=2s is
a)4/3 m/s
b)8/3m/s
c)4 m/s
d)8m/s
e)24m/s

For this problem this is a graph. Some of the points on the graph are (0,0),(1,2),(2,4),(3,6) where the x's is the time and the y's is the Force. I know that v=d/t but they don't give us time. Please help me.

The acceleration is a = F/m = 4/3 m/s^2

The velocity after 2 s is (1/2)at^2 =
(1/2)(4/3)(4) = ?
The answer is one of the multiple choices.

1. 👍 0
2. 👎 0
3. 👁 360

## Similar Questions

1. ### physics

A mass m = 17 kg is pulled along a horizontal floor with NO friction for a distance d =5.4 m. Then the mass is pulled up an incline that makes an angle θ = 32° with the horizontal and has a coefficient of kinetic friction μk =

asked by amanda on March 30, 2018
2. ### physics

As shown in the figure, a block of mass M1 = 0.470 kg is initially at rest on a slab of mass M2 = 0.850 kg, and the slab is initially at rest on a level table. A string of negligible mass is connected to the slab, runs over a

asked by Jimmy on October 17, 2011
3. ### AP Physics

A 5.86 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 14.4 N. The coefficient of kinetic friction is 0.14. The acceleration of gravity is 9.8 m/s 2 . Find the speed

asked by Robert on November 11, 2015
4. ### Physics

A 2.97 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 12.9 N. The coeﬃcient of kinetic friction is 0.126. The acceleration of gravity is 9.8 m/s^2. Find the speed

asked by Jem on December 1, 2011
5. ### physics

A mass m = 14.0 kg is pulled along a horizontal floor with NO friction for a distance d =8.7 m. Then the mass is pulled up an incline that makes an angle θ = 27.0° with the horizontal and has a coefficient of kinetic friction

asked by need of help on October 1, 2012
6. ### Classical Mechanics Physics

A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 1.2 N/s2. We stop pushing at time t1=5 s [F(t)=0 for

asked by Anonymous on December 6, 2013
7. ### physics

A block of ice at 0°C whose mass initially is m = 12.5 kg slides along a horizontal surface, starting at a speed vo = 4.10 m/s and finally coming to rest after traveling a distance d = 10.07 m. Compute the mass of ice melted as a

asked by AK on December 8, 2009
8. ### Classical Mechanics - Need Help Please

A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 1.2 N/s2. We stop pushing at time t1=5 s [F(t)=0 for

asked by Jeff on December 8, 2013
9. ### mit physyscs

A block of mass 2 kg is initially at rest on a horizontal surface. At time , we begin pushing on it with a horizontal force that varies with time as , where 0.6 N/s . We stop pushing at time s [ for ]. (a) First, assume the

asked by juanpro on December 6, 2013
10. ### physics

A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 0.6 N/s2. We stop pushing at time t1=5 s [F(t)=0 for

asked by socorro on December 9, 2013
11. ### PHYSICS

A 6.53-kg block initially at rest is pulled to the right along a horizontal surface by a constant force of 125 N applied at an angle θ above the horizontal. The coefficient of kinetic friction between the block and the horizontal

asked by ROMAN on November 15, 2016

More Similar Questions