Let rightward direction is considered as positive and leftward direction is considered as negative.
Acceleration of the boat, ( in left )
Final velocity of the boat,
We have to find initial velocity (u) of the sailboat.
Using first equation of motion :
So, initially the boat is moving with a speed of 13 m/s in leftwards direction.
Hence, this is the required solution.
What average net force is required to stop an 8500 kg truck in 10 s if it’s initially traveling at 20 m/s?
Suppose 1 gold bar is 6 cm long, 2 cm high, and 3 cm wide. How many whole gold bars will you be able to fit in a vault with a volume of 500 cm3?
Answer : The number of gold bar able to fit in a vault with a volume of will be 14.
First we have to calculate the volume of 1 gold bar.
Length of gold bar = 6 cm
Width of gold bar = 3 cm
Height of gold bar = 2 cm
Formula used :
Volume = Length × Width × Height
Volume = 6cm × 3cm × 2cm
Thus, the volume of 1 gold bar is
Now we have to calculate the number of gold bar will be able to fit in a vault with a volume of
Therefore, the number of gold bar able to fit in a vault with a volume of will be 14.
The position vector r describes the path of an object moving in the xy-plane. position vector point r(t) = ti + (ât2 + 7)j (1, 6) (a) find the velocity vector, speed, and acceleration vector of the object.
Speed is the rate at which an object moves relative to its reference point. Average speed is the total distance divided by the total time. We use average speed because the speed of an object may vary over time. Common measures of speed include miles per hour, meters per second or kilometers per minute. If you drive at a speed limit of 65 miles per hour, it means that in one hour you will have traveled 65 miles from the reference point of where you began. Because the speed at which an object travels varies over time,
it is impossible to calculate any type of speed measurement.
distance is considered the more important measurement.
average speed is used, which is total distance divided by total time.
time is considered the more important measurement.
Answer:it is c
the question answered itself.
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