Find force on a crate while a driver accelerates

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In summary, the crate with a mass of 250 kg is on the bed of a truck moving at 40.0 km/h. The driver accelerates to a speed of 70.0 km/h in 8 seconds, and assuming constant force and no sliding of the crate, the force acting on the crate during this time would be 3400 N.
  • #1
Ally385
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Homework Statement


A crate with a mass of 250 kg rests on the bed of a truck that is moving at a speed of 40.0 km/h. The driver accelerates to a speed of 70.0 km/h in 8 s. Assuming the force is constant, what force acts on the crate during this time? Assume that the crate does not slide on the bed of the truck.
A) 18 N
B) 3400 N
C) 240 N
D) 260 N


Homework Equations



f=ma

The Attempt at a Solution


Well I would think that you would find acceleration giving you 3.8m/s2 and then take 250/3.8 but that gets you 65.789 which is not an option.
 
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  • #2
Make sure you're converting the km/h to m/s.
 
  • #3
That helped. Thanks!
 

Related to Find force on a crate while a driver accelerates

1. What is the definition of force?

Force is a push or pull that can cause an object to accelerate, change direction, or deform.

2. How do you calculate force?

Force is calculated by multiplying mass and acceleration, according to Newton's Second Law of Motion, F=ma.

3. What factors affect the force on a crate while a driver accelerates?

The force on a crate while a driver accelerates is affected by the mass of the crate, the acceleration of the driver, and the coefficient of friction between the crate and the surface it is on.

4. How does the direction of the crate's movement affect the force?

The direction of the crate's movement can affect the force if the crate is being pushed or pulled in a certain direction. The force will be stronger in the direction of the acceleration.

5. What is the role of inertia in the force on a crate while a driver accelerates?

Inertia is the tendency of an object to resist change in its state of motion. In the case of a crate being accelerated by a driver, the crate's inertia will cause it to resist the change in motion and require a greater force to accelerate it.

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