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When you change your straight-line velocity (speed) from slow to fast you have positive acceleration and from fast to slow it will be negative acceleration.
Acceleration = velocity change divided by time taken.
So when you are traveling at say 10 m/s and decelerate to zero in 5 seconds, your (negative) acceleration will be = (0-10)/5 = - 2 metres per sec per sec.
Normally expressed as -2m/s^2.
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∙ 13y ago
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Is it possible for a body to have its velocity and acceleration pointing in opposite directions?
Sure. Anything that's slowing down has velocity and acceleration in opposite directions. -- A ball tossed up in the air has upward velocity and downward acceleration. -- A car stopping for a red light has forward velocity and backward acceleration.
Is it possible for body to have its velocity and acceleration pointing in opposite directions?
Sure. Anything that's slowing down has velocity and acceleration in opposite directions. -- A ball tossed up in the air has upward velocity and downward acceleration. -- A car stopping for a red light has forward velocity and backward acceleration.
What happen to the acceleration of an object if the force on the object increases?
Acceleration is a net force that is inversely dependent on mass, therefore if an object mass increases ,acceleration decreases
When will acceleration happen?
if there unequal velocities in equal intervals of time.
What has to happen to a car's acceleration and velocity for a car's speed to increase and have a positive acceleration?
The velocity has to increase in a positive direction. The increase in velocity in a positive direction is a positive acceleration.
What would happen to the acceleration if you increased the mass?
the acceleration decreases
When a body stops mooving what happen to the acceleration?
Acceleration becomes zero.
Suppose the force F doubles what will happen to the acceleration?
acceleration doubles too.
When do acceleration happen?
when there is change of speed
How do you find retardation if speed of a bus and its stopping time interval is given?
Reteradation will be half of acceleration
Can acceleration happen on a frictionless surface?
yes
Is it possible for a body to have its velocity and acceleration pointing in opposite directions?
Sure. Anything that's slowing down has velocity and acceleration in opposite directions. -- A ball tossed up in the air has upward velocity and downward acceleration. -- A car stopping for a red light has forward velocity and backward acceleration.
Is it possible for body to have its velocity and acceleration pointing in opposite directions?
Sure. Anything that's slowing down has velocity and acceleration in opposite directions. -- A ball tossed up in the air has upward velocity and downward acceleration. -- A car stopping for a red light has forward velocity and backward acceleration.
What is horizontal acceleration?
It is acceleration in the horizontal direction. This would happen as a result of a net horizontal force acting on a body.
What happen to the acceleration of an object if the force on the object increases?
Acceleration is a net force that is inversely dependent on mass, therefore if an object mass increases ,acceleration decreases
When will acceleration happen?
if there unequal velocities in equal intervals of time.
What happen to the acceleration of an object if the force one object increases?
Acceleration is a net force that is inversely dependent on mass, therefore if an object mass increases ,acceleration decreases
