Calculating Average Acceleration and Force of Dragster and Driver

In summary, the dragster and driver have a combined mass of 930.1 kg. The dragster starts from rest and reaches a speed of 25.8 m/s in 0.56 s. The average acceleration of the dragster during this time interval is 46.07142857 m/s^2. To find the average force, we use the formula Fnet=Ma, resulting in a force of 42851.03571 N. However, since we are only considering the force on the dragster, we must subtract the mass of the driver (74.9 kg), resulting in a horizontal force of 35386.27143 N exerted on the dragster. The force exerted on the driver
  • #1
rr92890
5
0
A dragster and a driver together have mas 930.1 kg. the dragster, starting from rest, attains a speed of 25.8 m/s in .56 s. Find the average accel. of the dragster during ths time interval. What is the size of the average force on the dragster during this time interval? Answer in units of N.
The driver has a mass of 74.9 kg. What horizontal force does the seat exert on the driver.

I'm not even sure where to start.
 
Physics news on Phys.org
  • #2
Do you know what acceleration is? Do you know a formula for it? Do you know Newton's 2nd law?
 
  • #3
would it be 25.8m/s / .56s (46.07142857) for the acceleration. and I now that the second law is Fnet=Ma...OO, so it is 46.07142857*930.1=42851.03571 N?
 
  • #4
not *930.1 , *74.9.
Because you're talking about the force exerting on the driver,not both of them.
 
  • #5
Von said:
not *930.1 , *74.9.
Because you're talking about the force exerting on the driver,not both of them.

Erm...

rr92890 said:
A dragster and a driver together have mas 930.1 kg. the dragster, starting from rest, attains a speed of 25.8 m/s in .56 s. Find the average accel. of the dragster during ths time interval. What is the size of the average force on the dragster during this time interval? Answer in units of N.
The driver has a mass of 74.9 kg. What horizontal force does the seat exert on the driver.
 
  • #6
Hootenanny said:
Erm...

?

(I wanted to post just the '?', but evidently it found the post too short and didn't accept! But Hootenanny's post is considered to be a complete thesis?
 
  • #7
Von said:
not *930.1 , *74.9.
Because you're talking about the force exerting on the driver,not both of them.

He also has to find the force on just the dragster. So, *(930.1 - 74.9).

Do you understand the Erm... now?
 
Last edited:
  • #8
Didn't see that! o(∩_∩)o...
 

1. How do you calculate average acceleration for a dragster and driver?

To calculate average acceleration, you will need to know the initial velocity (Vi), final velocity (Vf), and the time it took to reach the final velocity (t). The formula for average acceleration is (Vf-Vi)/t. Simply plug in the values and solve for the average acceleration in units of meters per second squared (m/s^2).

2. What factors affect the average acceleration of a dragster and driver?

The average acceleration of a dragster and driver can be affected by factors such as the power and torque of the engine, the weight of the car, the aerodynamics of the car, and the grip of the tires. Additionally, the skill and reaction time of the driver can also have an impact on the average acceleration.

3. How do you calculate the force of drag on a dragster and driver?

The force of drag on a dragster and driver can be calculated using the equation Fd = (1/2) ρ v^2 Cd A, where ρ is the density of air, v is the velocity, Cd is the drag coefficient, and A is the frontal area of the dragster and driver. This equation takes into account the air resistance that the dragster and driver experience while moving through the air.

4. What is the relationship between average acceleration and force of drag on a dragster and driver?

The average acceleration of a dragster and driver is indirectly related to the force of drag. This means that as the force of drag increases, the average acceleration decreases. This is due to the fact that the force of drag acts in the opposite direction of the motion, causing the dragster and driver to slow down and thus have a lower average acceleration.

5. How can you use the calculations of average acceleration and force of drag to improve the performance of a dragster and driver?

By understanding the calculations of average acceleration and force of drag, you can make adjustments to improve the performance of a dragster and driver. For example, by reducing the drag coefficient or increasing the power of the engine, you can decrease the force of drag and increase the average acceleration. Similarly, by improving the aerodynamics of the car, you can also reduce the force of drag and improve the performance of the dragster and driver.

Similar threads

Work done during a collision -- Change in Kinetic Energy & change in Momentum
    • Introductory Physics Homework Help
Replies
1
Views
549
Calculating Dragster Acceleration, Force, & Driver Force
    • Introductory Physics Homework Help
Replies
6
Views
7K
Help solving for average force please
    • Introductory Physics Homework Help
Replies
14
Views
7K
Lift force and acceleration
    • Introductory Physics Homework Help
Replies
2
Views
4K
Do I need to consider mass in the equations?
    • Introductory Physics Homework Help
Replies
3
Views
791
A ball bounces off a brick wall, Find the average acceleration
    • Introductory Physics Homework Help
Replies
5
Views
4K
The x components of the average accelerations?
    • Introductory Physics Homework Help
Replies
33
Views
5K
Rotational Motion: Average angular acceleration of a CD
    • Introductory Physics Homework Help
Replies
2
Views
5K
Speed at Takeoff and Average Acceleration
    • Introductory Physics Homework Help
Replies
8
Views
2K
Calculate Impulse and average force
    • Introductory Physics Homework Help
Replies
10
Views
3K

Hot Threads

Recent Insights

Back
Top