LawrenceC said:Square the equation to get rid of the radical. Move the 8.8^2 to RHS leaving only something squared on LHS. Take square root and you are left with quadratic. The problem then is that the roots of the quadratic equation are imaginary. Are you sure you copied the problem correctly. B*B-4*A*C < 0.
LawrenceC said:No, you get the square root of a negative number for a time. Last time I looked, time was not an imaginary quantity. B*B-4*A*C is what is under the radical. If it is less than zero, then roots are imaginary.
To find the time when velocity equals 10 m/s, you can use the equation v = d/t, where v is the velocity, d is the distance, and t is the time. Rearrange the equation to solve for t: t = d/v. Plug in the known values for velocity and distance, and solve for time.
To find the time when velocity equals 10 m/s, you need to know the velocity and distance. These values can be obtained from a position-time graph or by using a speedometer.
Yes, as long as the unit for distance is consistent. For example, if the distance is given in meters, the velocity should also be in meters per second.
No, finding the time when velocity equals 10 m/s only gives you the time at a specific moment when the velocity is 10 m/s. Average speed, on the other hand, takes into account the total distance traveled over a period of time.
Yes, the equation v = d/t can be used to find the time at any velocity as long as the distance is known. It is a fundamental equation in physics known as the equation of motion.