physics question?

Question

can an automobile with a velocity toward north simultaneously have an acceleration toward the south?

help me please

Answer 1

yes.
it can be slowing down while travelling towards north. it has velocity northwards, but the acceleration is southwards

Answer 2

The moment you hit the brakes or let off the gas, the acceleration becomes toward south, while the velocity continues north. It's difficult to grasp, but imagine another automobile traveling alongside the stated automobile, and when the first car hits the brakes, which direction does the car appear to go from the point of view of the driver of the car which keeps it's current velocity?--south.

Answer 3

acceleration is change is velocity. If velocity is decreasing, say from 7m/s to 4m/s. the change is -3m/s. so acceleration is -3m/s/s. Hence, velocity is +ve and acceleration is -ve. both in opposite direction. So, if automobile with a velocity toward north simultaneously has an acceleration toward south i.e. just opposite.

Answer 4

Yes. A car moving toward norht at a decreasing speed has an acceleration toward south. Generally, an object with a velocity and an aceleration in opposite directions is moving slower and slower. On the other hand, an object with a velocity and an aceleration in the same direction is moving faster and faster.

Answer 5

Yes as stated before.

Motion is studying an object as it changes position over time.

Velocity (speed) is the change in distance over time.
Acceleration is the change in velocity over time.

This is where calculus becomes helpful, because it allows you to measure instantaneous change.

Going down a highway at a steady velocity of 60 mph your acceleration is zero. But when you exit, you decrease your velocity, so you must have a negative acceleration (deceleration) in order to stop at the light at the end of the ramp.

When the light turns green, and you floor it, your speed is zero, but your acceleration is high.

In your case, if you choose North as a positive direction, your acceleration would be negative.

Answer 6

yea, 2 ways.
one velocity is combination of speed and direction. So the direction doesnt change but the speed changes that affects the accerlation.

And since the earth is round north n south doesnt really matter since once u get past the "north point" ur velocity never changed but ur headed south now.

Kinda hard to explain but i think u should b able to figure it out by useing a globe and moving ur fingure north and keep going past north.

Answer 7

Yea, its possible. Let say when u through a ball upward its velocity is upward and gravitational acceleration is towards downward. Similarly let say the object is an electrostatic charge(+ve) and there is an electrostatic field towards south and ur moving this charge towards north. then the similar case will arise.

Answer 8

yes, if it is slowing down. You see, velocity is the change in position in time, and acceleration in change in velocity in time. If you are traveling north, you have a northward velocity, but if you are slowing down, you have a southward acceleration (or you could call it deceleration).

Answer 9

yes (consider n object moving 2 the north but slowing down)

Answer 10

Yes, as long as they travel the same distance and acceleration