Basic Physics Question

When does it reach the maximum...?Think about it... when does the projectile reach its maximum height?Solve for t when v=0.Then substitute that value into the equation x = x0 + v0 t. That will give you the displacement in the x direction when the projectile is at its maximum height.In summary, the projectile is displaced 40 m horizontally and 53 m vertically above its launch point after 2 seconds. The horizontal velocity component is constant, but not 40 m/s, and the vertical velocity component accelerates at 9.8 m/s^2 downward due to gravity. To find the horizontal and vertical components of the initial velocity, equations are used to
  • #36
kara said:
and b/c I am looking for how far its been displaced horizontally from the launch pt. i am looking for x?
That's right. You are looking for the value of x when y is maximum. Hint: When does it reach the maximum height?
 
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  • #37
well the max height is 53 m, and it reaches that height when v = 0.0 m/s
 
  • #38
i plugged in all my values but get stuck at one point with a negative square root:

53 = -1/2(9.8)t^2
 
  • #39
if i multiply both sides by 2 to get rid of the 1/2 i get

106 = -(9.8) t^2
 
  • #40
kara said:
i plugged in all my values but get stuck at one point with a negative square root:

53 = -1/2(9.8)t^2
You left out part of that equation; it should be:
53 = v0t -1/2(9.8)t^2

Where v0 is the vertical component of initial velocity that you found earlier.
 
<h2>1. What is the difference between velocity and speed?</h2><p>Velocity and speed are often used interchangeably, but they have different meanings in physics. Speed is a measure of how fast an object is moving, while velocity is the speed of an object in a specific direction. This means that an object can have a high speed but low velocity if it is moving in a circular path, for example.</p><h2>2. What is the difference between mass and weight?</h2><p>Mass and weight are two different properties of an object. Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. This means that an object's mass will remain the same regardless of its location, but its weight will change depending on the strength of gravity in that location.</p><h2>3. What is the difference between potential and kinetic energy?</h2><p>Potential energy is the energy an object has due to its position or state, while kinetic energy is the energy an object has due to its motion. For example, a ball sitting at the top of a hill has potential energy because of its position, but as it rolls down the hill, that potential energy is converted into kinetic energy.</p><h2>4. What is the difference between force and pressure?</h2><p>Force and pressure are related, but they are not the same thing. Force is a push or pull on an object, while pressure is the force applied per unit area. This means that the same amount of force can have different effects depending on the surface area over which it is applied.</p><h2>5. What is the difference between work and power?</h2><p>Work and power are both measures of energy, but they have different definitions. Work is the amount of energy transferred when a force is applied to an object and causes it to move a certain distance. Power, on the other hand, is the rate at which work is done or the amount of work done per unit of time.</p>

1. What is the difference between velocity and speed?

Velocity and speed are often used interchangeably, but they have different meanings in physics. Speed is a measure of how fast an object is moving, while velocity is the speed of an object in a specific direction. This means that an object can have a high speed but low velocity if it is moving in a circular path, for example.

2. What is the difference between mass and weight?

Mass and weight are two different properties of an object. Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. This means that an object's mass will remain the same regardless of its location, but its weight will change depending on the strength of gravity in that location.

3. What is the difference between potential and kinetic energy?

Potential energy is the energy an object has due to its position or state, while kinetic energy is the energy an object has due to its motion. For example, a ball sitting at the top of a hill has potential energy because of its position, but as it rolls down the hill, that potential energy is converted into kinetic energy.

4. What is the difference between force and pressure?

Force and pressure are related, but they are not the same thing. Force is a push or pull on an object, while pressure is the force applied per unit area. This means that the same amount of force can have different effects depending on the surface area over which it is applied.

5. What is the difference between work and power?

Work and power are both measures of energy, but they have different definitions. Work is the amount of energy transferred when a force is applied to an object and causes it to move a certain distance. Power, on the other hand, is the rate at which work is done or the amount of work done per unit of time.

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