Question

X=5+10t^2-t m=100г t=2c V=? P=? F=?

Answer 1

Ответ:

Объяснение:

V(t)=x'(t)=20*t-1  a(t)=V'(t)=20 м/с2  V(2)=20*2-1=39 м/с  p=m*V=0,1*39=3.9 кг*м/с   F=m*a=0,1*20=2 H

Answer 2

To calculate the values of V, P, and F, we first need to clarify the meanings of the variables:

• X: This seems to represent a position or distance (in meters) with respect to time (t).
• t: Time (in seconds).
• m: Mass (in grams) of an object.
• V: This could represent velocity or volume. Please specify which one you are referring to.
• P: This could represent pressure or power. Please specify which one you are referring to.
• F: Force (in Newtons).

Let's start by calculating the values step by step:

1. Calculate X at t=2 seconds: X = 5 + 10t^2 - t X = 5 + 10(2)^2 - 2 X = 5 + 10(4) - 2 X = 5 + 40 - 2 X = 43 meters

2. Calculate the force (F) using the equation F = ma (Newton's second law of motion), where a is acceleration and can be calculated using the second derivative of X with respect to t. a = d^2X/dt^2 = d/dt(10t^2 - t) = 20t - 1

Now, at t = 2 seconds: a = 20(2) - 1 a = 39 m/s^2

Now, calculate the force: F = m * a F = 100 g * 39 m/s^2 F = 3900 g m/s^2

Note: 1 N (Newton) = 1 kg * m/s^2, so we need to convert grams to kilograms: F = 3900 g m/s^2 * (1 kg / 1000 g) F = 3.9 N

3. Calculate velocity (V): To calculate velocity, we need to find the derivative of X with respect to time (t): V = dX/dt = d/dt(5 + 10t^2 - t) = 20t - 1

Now, at t = 2 seconds: V = 20(2) - 1 V = 39 m/s

4. Calculate pressure (P): There is not enough information given to calculate pressure (P). We need additional information like the area of application of force to determine the pressure.

So, the final results are:

• X = 43 meters (position at t = 2 seconds)
• V = 39 m/s (velocity at t = 2 seconds)
• F = 3.9 N (force at t = 2 seconds)

Please provide more information if you want to calculate pressure (P) or specify whether V represents velocity or volume, and whether P represents pressure or power.