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A driver starts his parked car and within 5 seconds reaches a velocity of 54 km per hour as he travels east what is his acceleration?
vf=54 km/hr vi=0km/hr t=5sec/0.001hr a=5400 km/hr 54km/hr- 0km/hr --------------------- 0.001 hr
A baseball is hit straight up at an initial velocity of 100MS How long will it take to hit the ground?
Take acceleration of gravity = 9.8 m/s2 .The ball stops rising and starts falling in (100/9.8) seconds.It returns to the height of the bat in 2 x (100/9.8) = 20.408 seconds. (rounded)
What is the greatest length of time measured on a stopwatch?
There is no upper limit; when the stopwatch reaches the largest number of seconds it can count, it simply starts over. It is your job to count the number of times it starts over. Most digital stopwatches can time up to 20 hours, resetting after 19:59:59.99.
What are false starts?
False starts in 100 metre sprints are when an athlete leaves the starting blocks 0.10 seconds after the gun goes off; the IAAF did tests that show the human brain can't process the information from the sound of the gun in under that time. This precise measuring is only used in higher level tournaments.
How many seconds are in a school week?
A school week consists of the days Monday through Friday. So one answer would be to count every second starting from very second you start school up until you reach the very last second you are in school. Assuming school starts Monday morning at 7:00 AM and ends Friday afternoon at 2:40 PM, then the number of seconds equates to: 24 hours/day * 4 + 6.667 hours/Friday * 1 = 102.667 hours 102.667 hours * 3600 seconds/hour = 369601.2 seconds
What is speed of object at 3 seconds given an acceleration of 16 feet per second squared for 3 seconds?
I assume the object starts from rest. The speed will be 16*3 which is 48m/s
If an object starts to accelerate what is it called?
If an object starts to accelerate, it is called gaining speed or increasing its velocity. Acceleration is the rate at which an object's velocity changes over time.
How far does an object fall in .25 seconds?
Assuming the object starts from rest, the distance an object falls in 0.25 seconds can be calculated using the equation ( d = \frac{1}{2}gt^2 ), where (d) is the distance, (g) is the acceleration due to gravity (9.8 m/s²), and (t) is the time. Substituting the values, the object would fall approximately 0.31 meters in 0.25 seconds.
What is the velocity of an object that starts at 45 mph and accelerates at a rate of -10 mphsec for 3 seconds?
the final velocity = initial velocity + acceleration x time; since acceleration is negative final velocity = 45 - 10x3 = 45 -30 = 15 mph
A car starts from rest and reaches 20 ms in 10 seconds The average acceleration of the car in ms2 is?
10
How are constant speed and constant acceleration different?
There is a huge difference between constant speed and constant acceleration. Constant speed is when the object is travelling constant, no change in its velocity and acceleration or in other words no extra force to speed up. Constant acceleration when the object is acceleration constant, it means that the speed of the object is change at the same rate each second. The acceleration rate at which the object is travelling is constant. for example, when a car is stationary at a traffic light and it starts acceleration, picking up speed but the rate of acceleration will not constant because the amount of force applied differs each second due to the acceleration rate.
If an object starts to accelerate?
If an object moved with constant acceleration it's velocity must ?
If a car starts from rest and travels a distance of 100 meters in 10 seconds what is the car acceleration?
2.0 m/s^2
Theory about uniformly accelerated motion?
Uniformly accelerated motion describes an object moving with a constant acceleration. This means the object's velocity changes by the same amount in each time interval. The equations of motion for uniformly accelerated motion can be used to predict the object's position, velocity, and acceleration at any point in time.
What is the acceleration of an object thrown straight up in the air near the surface of the earth at the very top of its path?
The acceleration of the object at the very top of its path is equal to the acceleration due to gravity, which is approximately 9.81 m/s^2 near the surface of the Earth. At this point, the object momentarily comes to a stop before it starts to fall back down due to gravity.
A constant forces of ION pushes a 10 kg box of 10 seconds If the was initially at rest what its speed after 10 seconds?
To determine the speed of the box after 10 seconds, we need to use the formula for acceleration: ( a = F / m ), where ( a ) is acceleration, ( F ) is the force, and ( m ) is the mass. Given that the force is constant and the box starts from rest, we can further use the equation for speed ( v = a * t ), where ( t ) is time. Calculate the acceleration using the force and mass, then use that acceleration to calculate the final speed after 10 seconds.
Is it possible for an object with constant negative acceleration to change the direction in which it is moving?
Yes, an object with constant negative acceleration can change the direction in which it is moving. Negative acceleration means that the object is slowing down, so if its initial velocity is in one direction, the acceleration can eventually cause it to come to a stop and then start moving in the opposite direction.
