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its slowing

so its decelerating

Q: If A bus decreases its speed from 80kilometer per hour to 60kilometer per hour in 5 seconds find the acceleration of the bus?

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The period of a pendulum (in seconds) is 2(pi)√(L/g), where L is the length and g is the acceleration due to gravity. As acceleration due to gravity increases, the period decreases, so the smaller the acceleration due to gravity, the longer the period of the pendulum.

velocity = acceleration x time 27 = acceleration x 10 acceleration = 2.7 m/sec/sec

what is the change in speed or velocity? average acceleration will be change in speed or velocity divided by time taken (4 seconds in ur case)

Change of speed divided by time gives you average acceleration. For example, a change of 30 m/s during 5 seconds gives you 6 meters per second square - this is the average acceleration during those 5 seconds. If acceleration is constant, then this is also the acceleration at any moment during those 5 seconds. For more complicated functions (non-constant acceleration), derivates (a topic in calculus) has to be used. Specifically, the acceleration is the derivative of the velocity.

Time period of a seconds pendulum is 99.3955111cm at a place where the gravitational acceleration is 9.8m/s2

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The period of a pendulum (in seconds) is 2(pi)√(L/g), where L is the length and g is the acceleration due to gravity. As acceleration due to gravity increases, the period decreases, so the smaller the acceleration due to gravity, the longer the period of the pendulum.

a bus decreases it's speed from 80km h-1to 60km h-1 in 5seconds.find the aceleration of the bus.

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The rate of change of velocity in a particular direction per unit second is acceleration. Let us assume a body is moving at a speed v' in particular direction, say north, and in t seconds, its velocity increases/decreases to v". So the acceleration is, a=(v"~v')/t

velocity = acceleration x time 27 = acceleration x 10 acceleration = 2.7 m/sec/sec

The acceleration of the car can be calculated using the formula: acceleration = (final velocity - initial velocity) / time. Converting the initial velocity of 0 km/hr to m/s and final velocity of 60 km/hr to m/s, and plugging in the values, we get the acceleration to be 2 m/s^2.

Acceleration= distance / velocity squared

Acceleration occurs when velocity changes over time. The formula for it is as follows: a = (Vf - Vi) / t a: acceleration (meters/seconds2) Vf: Final velocity (meters/seconds) Vi: Initial Velocity (meters/seconds) t: Time (seconds)

what is the change in speed or velocity? average acceleration will be change in speed or velocity divided by time taken (4 seconds in ur case)

Yes, velocity is acceleration x time. If acceleration is the same, velocity can be different as it changes with time. For example a car accelerating with constant acceleration will have a different velocity after 5 seconds than it will have at 2 seconds.

it's answer "c"

To calculate the acceleration, you need to divide the net force by the mass.