Calculating Initial Acceleration

In summary, initial acceleration is the rate at which an object's velocity changes from a state of rest to a state of motion. It can be calculated by dividing the change in velocity by the change in time, using the formula a = Δv/Δt, and is measured in meters per second squared (m/s²). Factors such as the mass of the object, applied force, and friction can affect initial acceleration. Calculating initial acceleration is important in science as it allows for the understanding and prediction of object motion, as well as analysis of the effects of forces on movement. It is a fundamental concept in the study of physics and motion.
  • #1
kencamarador
33
0
calculate the initial acceleration of a 13 140 kg V-2 rocket bomb fired vertically, if the thrust of its engines is 2.63 x 10 to the power of 5 N. then calculate the rockets acceleration near "burn-out", when its mass is only 4170 kg.


So i did. Part 1.

Fnet = ma
a = fnet/m
20.01m/s^2= 263000/13140

but the correct answer is 10.2
 
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  • #2
You forgot to include gravitational force.
 
  • #3
ah, right right.
Fg = 13140+9.8
=128772 N (Down)

Fnet= 263000-128772
= 134228 N (Up)

Acceleration= f/m
=10.2m/s^2 (Up)

Thx.
 

FAQ: Calculating Initial Acceleration

What is initial acceleration?

Initial acceleration is the rate at which an object's velocity changes from a state of rest to a state of motion.

How is initial acceleration calculated?

Initial acceleration can be calculated by dividing the change in velocity by the change in time, using the formula a = Δv/Δt.

What units are used to measure initial acceleration?

The standard unit for initial acceleration is meters per second squared (m/s²).

What factors affect initial acceleration?

The initial acceleration of an object can be affected by factors such as the mass of the object, the applied force, and any friction or resistance present.

Why is calculating initial acceleration important in science?

Calculating initial acceleration allows scientists to understand and predict the motion of objects, and to analyze the effects of different forces on their movement. It is a fundamental concept in the study of physics and motion.

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