What happens to the acceleration of a car if it drives off a cliff?
Once the car drives off the cliff, its motion will be affected by the gravitational acceleration. In fact, if you break down its motion on two dimensions, you can say that vertically the car is free falling because the vertical component of its initial velocity is equal to zero.
How do you find how high a cliff is in physics?
It goes like this:
- Toss a rock straight out from the cliff and use a stopwatch to time how long it takes to hit the water.
- Multiply that number by itself, and then multiply that by 16.
- That should be almost exactly the height of the cliff in feet.
How do you understand projectile motion?
Projectile motion is a form of motion where an object moves in a bilaterally symmetrical, parabolic path. The path that the object follows is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning on the trajectory, after which the only interference is from gravity.
When objects go off a cliff their time of flight is determined by?
vertical motion
The time for projectile motion is determined completely by the vertical motion. Thus, any projectile that has an initial vertical velocity of 21.2 m/s and lands 10.0 m below its starting altitude spends 3.79 s in the air.
What happens to the velocity of a ball as it is dropped off a cliff?
When the ball comes back down to ground level it has exactly the same speed as when it was thrown up, but its velocity is reversed. This is an example of the law of conservation of energy.
How fast is the car moving when it hits the ground?
when it hit the ground it would be moving at v = g • t =32 ft/s2 • 9.5 sec = 305 ft/s or about 208 mph (watch out!)
How does gravity affect a car that falls off a cliff?
Think of it like this: when the car drives off the cliff, at some point it has a portion of it falling and consequently rotating due to torque exerted by gravity while the other end remains at its original height due to normal forces. As a result, the car will tend to have some sort of rotation as it falls.
How fast do you fall per second?
Gravity accelerates you at 9.8 meters per second per second. After one second, you’re falling 9.8 m/s. After two seconds, you’re falling 19.6 m/s, and so on.
How tall does a cliff have to be to be considered a cliff?
Height is not the criteria for a cliff to be reckoned as a cliff as such. Any steep rock face especially at the edge of the sea can be designated as cliff.
What are post video crash questions in physics?
The post-video “crash” questions are higher-order questions intended to stimulate discussion among students. Individual questions may be assigned to small groups for discussion,with each group responsible for presenting answers to the class for discussion.
What happens to potential energy as car rolls down hill?
If it is sitting still, it has no kinetic energy. As the car begins to roll down the hill, it loses potential energy, but gains kinetic energy. The potential energy of the position of the car at the top of the hill is getting converted into kinetic energy.
How is the momentum before and after a car crash related?
The momentum before the collision equals the momentum after the collision. 1. Describe the collision pictured below in terms of momentum,if the truck has four times the momentum of the car before the collision. With more momentum, the truck will keep going in its original direction and snap the car into sudden reverse.
What do you need to know about physics?
Physics is filled with equations and formulas that deal with angular motion, Carnot engines, fluids, forces, moments of inert… When an object falls, its gravitational potential energy is changed to kinetic energy.
https://www.youtube.com/watch?v=hO_SBQY6fJg