If you assume a gravity of 9.8, that would be 4 x 9.8 (answer in meter/second). If there is air resistance, the speed will be less than that.
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)
In the case of constant velocity (or speed), velocity = distance / time.
It is not possible to answer this question without the starting velocity.
The velocity gained by the aircraft in 4 seconds can be calculated using the formula: velocity = acceleration × time. Given acceleration of 3 m/s^2 and time of 4 seconds, the velocity gained by the aircraft would be 12 meters per second.
The student's velocity is 4 meters per second. Velocity is calculated by dividing the distance traveled by the time taken. In this case, 20 meters divided by 5 seconds equals 4 meters per second.
4 seconds
To calculate the rate of acceleration, you need to know the change in velocity of the basketball over the 4 seconds. If you have the initial and final velocities, you can use the formula: acceleration = (final velocity - initial velocity) / time. For example, if the basketball's initial velocity is 0 m/s and its final velocity is 8 m/s, the acceleration would be (8 m/s - 0 m/s) / 4 s = 2 m/s².
Since the equation for time=sqrt(2h/g) set 2 seconds for time and 9.8 for gravity so 2=sqrt(2h/9.8) clear the sqrt by squaring both sides 4= 2h/9.8 9.8*4 =2h (9.8*4)/2 = height. now that you have the height, you can do v=distance/time v=height from the equation prior/2 seconds i hope that works..
The change in velocity was 8 m / s. Divide that by 4 seconds and get 2 m / s2 -- sometimes stated as acceleration of 2 meters per second per second.
The train's velocity after 30 seconds can be calculated using the formula: final velocity = initial velocity + (acceleration * time). Plugging in the values, final velocity = 20 km/hr + (4 km/hr/s * 30 s) = 20 km/hr + 120 km/hr = 140 km/hr. So, the train's velocity after 30 seconds is 140 km/hr.
It is 0.1 metre per second-squared.
Acceleration can be calculated using the formula: acceleration = change in velocity / time taken. In this case, the change in velocity is 9 m/s and the time taken is 4 seconds. Therefore, the acceleration would be 9 m/s divided by 4 seconds, which equals 2.25 m/s^2.