Please Answer Asap (Its Just Grade 7), 1. The Contact Force Called The Normal Force Is____, A.Upward

PLEASE ANSWER ASAP (its just grade 7)

1. the contact force called the normal force is____
A.upward vertical force
B. net force acting on the subject
C. a force perpendicular to the surface of earth
D. a contact force perpendicular to the contact surface
2. what is the weakest fundemental force?
A. weak force
B. strong force
C. gravitanional force
D. electromagnetic force
3. what does the speedmmeter of a car measure
A. acceleration
B. average speed
C. instantaneous velocity
D. instantaneous speed
4. which of the following describes an object moving at constant acceleration?
A. moving at constant velocity
B. itsvelocity keeps on fluctuating
C. covering same distance at the same time
D. change in velocity occurs at the same rate
5. what is the value of displacement in this situation: a dog waks 1 meter south and 3 meters north

(who ever just says "sorry need the points" or nonsense answers will be reported)

 

Answer:

1.A

2.A

3.B

4.D

Explanation:

yung 5 walang abc.