The four darts described below are all thrown at exactly the same time. Which will hit the ground last? Dart A, with an initial vertical velocity of 10 m/s and an initial horizontal velocity of 10 m/s.
Dart B, with an initial vertical velocity of 15 m/s and an initial horizontal velocity of 0 m/s.
Dart C, with an initial vertical velocity of 5 m/s and an initial horizontal velocity of 0 m/s.
Dart D, with an initial vertical velocity of 5 m/s and an initial horizontal velocity of 20 m/s.

The diagram shows a person using a piece of gym equipment to lift weight which best describe the body in terms of simple machine

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?