a few physic's questions please help me!?

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madison d

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1. A quantity that has both magnitude and direction would be called:
A. scalar quantity
B. newton quantity
C. resultant quantity
D. vector quantity


2. A projectile is launched vertically at 100 m/s. If air resistance can be neglected, at what speed will it return to the ground?
A. 5 m/s
B. 9.8 m/s
C. 75 m/s
D. 100 m/s


3. The net result of a combination of two or more vectors is called the ____________.
A. magnitude
B. resultant
C. scalar
D. velocity


4. Any object that is put into motion by some force and continues in motion by virtue of its own inertial is called a ___________________.
A. projectile
B. vector
C. golf ball
D. scalar


5. Two balls are released at the same time. Ball A is launched horizontally at 5 m/s and Ball B is simply dropped vertically. Which will have the greater velocity when they hit the ground?
A. Ball A
B. Ball B
C. their velocities will be equal
D. cannot be determined without knowing height


6. A football player kicks the ball from the ground into the air at an angle of 25.0° above the horizontal at a speed of 25 m/s. How far does the ball travel?
A. 25 m
B. 48.9 m
C. 54 m
D. 626 m


THANK YOU SOOOOO MUCH!!!
 
1. D
2. D
3. B
4. A
5. Can friction be neglected? The resultant of A would be bigger without friction. But with friction AND enough height, they'ld eventually be the same.
The vertical speeds will be equal if there's no friction.

6. B or C, you've gotta calculate that
 
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