0
Assuming that his acceleration was linear (ie. that he slowed down at a perfectly steady rate), then you can say his velocity at any point in those eight seconds was:
21 - t(21 / 8) m/s
To get the distance covered in that time, you can simply take the area under that line between 0 seconds and eight seconds. Because it's linear, this is very easy. You're dealing with a right triangle that is 8 seconds wide and 21 meters per second tall. With a triangle, the area is equal to half it's width times it's height, so the equation is:
d = 21m/s * 8s / 2
∴d = 168m / 2
∴d = 84m.
So he traveled 84 meters in those 8 seconds, and probably scared the bejeebers out of that poor deer.
Average speed = 21/2 m/s , Time =8 s, Distance = 8 x 21/2 = 84m
What else can I help you with?
What is the stopping distance for a car travelling at 65 mph?
A lot farther than you'd think. There is no simple answer to this, because of the following questions. Is the driver alert or using a mobile phone? Is the road wet, dusty, muddy, or icy? Is the road concrete or asphalt? What kind of tyres, are they inflated equally, are they inflated enough. Do the brakes work? Is the land flat? How many people are in the car? Is the fuel tank full?
What is a Primary key in relation to functions and relations?
A primary key is the identifier in a table. It cannot contain values that are null, and it has to be unique for every record. For example, a driver's license number could be a primary key in a relational database table. Every driver is assigned to one unique identifier, or driver's license number, and no two driver's license numbers are identical.
What is a Driver Diameter?
A measurement of headphone bass quality, a larger diameter driver will have better bass than a smaller one. The same is true for speakers. A speaker with a 12 inch woofer has better bass than one with a 4 inch woofer.
Where do you use slope in your daily life?
As a coach driver, knowing the slope (or gradient) of a hill is very important for choosing the correct gear.
How far will a driver travel at a speed of 61 miles per hour for 8 hours?
488 miles. But it's doubtful that he could actually do that without stops for food, rest, gas, and pits.
A driver of a car traveling at 52 km per hour applies brakes and accelerates uniformly in opposite directionthe car stops in 5 seconds. how far will it travel before stopping?
0.07km
A driver of a car traveling at 15.3 ms applies the brakes causing a uniform deceleration of 2.9 ms2 How long does it take the car to accelerate to a final speed of 9.60 ms?
(15.3 - 9.6)/2.9 = 5.7/2.9 = 1.966 seconds (rounded)
How many seconds to stop at 30 mph?
That depends on the driver's reaction time, the weight of the car, the condition of the brakes, and the composition and condition of the pavement.
How do you use the word brakes in a sentence?
The driver suddenly applied the brakes.
What is the reaction time for a driver?
The reaction time of a driver is .75 seconds ... or 1 car length for every 10 mph that you are traveling. This can vary depending on things like cell phone usage, radio distraction and more.
Why the passengers standing in the bus fall forward when it's driver applies brakes suddenly?
The passengers fall forward when the driver applies brakes suddenly because of inertia. Inertia is the tendency of an object to resist changes in its state of motion. When the bus abruptly decelerates, the passengers continue moving forward due to their inertia, causing them to fall forward.
How many seconds will it take for a car to stop if it is traveling at a speed of 40 miles per hour?
Stopping distances are measured in feet not in seconds. At 40 mph you're traveling 58.7 feet per second. The average driver reaction time is about 3/4 second which equates to 44 feet. After applying the brakes it will take approximately 82 feet to stop the vehicle. The total stopping distance for a car traveling 40 mph will be 126 feet when you include reaction time and actual stopping distance of the vehicle. If you divide 126' x 58.7' which is the distance traveled per second you get 2.14 seconds. This is assuming you're paying attention and have average reaction time while driving.
If a drinking driver is traveling 70 miles per hour and it takes three seconds for her or his pupils to return to normal after being temporarily blinded by bright headlights the person has driven over?
50
If a drinking driver is traveling 70 miles per hour and it takes three seconds for her or his pupil to return to normal after being temporarily blinded by bright headlights the person has driven over?
If a drinking driver is traveling at 70 miles per hour and their pupils take three seconds to return to normal after being temporarily blinded by bright headlights, they would have covered a significant distance during that time. In three seconds, at 70 miles per hour, the driver would travel approximately 308 feet. This highlights the dangers of impaired driving, as even a brief moment of reduced visibility can lead to serious consequences.
Is driver responsible for pony death after driving through fence when he knew brakes weren't working?
The driver of a vehicle is responsible for the proper functioning of that vehicle. Even if you did not know the brakes were bad, the accident and all damages are the fault of the driver.
When braking a vehicle equipped with anti lock brakes the driver needs to?
The driver would need to step on the brake pedal when braking a vehicle equipped with anti-lock brakes. FYI, the driver would also need to step on the brake pedal when braking a vehicle that is NOT equipped with anti-lock brakes. Hope this helps.
If a car hits another car head on and they were both traveling 50 MPH what is the closing speed?
Assuming that both vehicles were in the center of a straight road, and neither vehicles driver hit the brakes, the closure rate would be 100 mph.
