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PHYSICS1_LAB MIDTERM
MIDTERM REVIEW
| Question | Answer |
|---|---|
| Free fall and projectile are similar in terms of: gravity range initial speed final speed | gravity |
| A projectile reaches a range of 100 m when it was released at an angle of 30 degrees from horizontal. What should the angle be to increase further the range? increased to 90 degrees increased to 45 degrees decreased to 10 degrees | increased to 45 degrees |
| A projectile reaches a range of 20 m when it was released at an angle of 40 degrees from horizontal. What should the angle be to decrease the range, but should not return to its original position? increase to 45 degrees decrease the angle | decrease the angle |
| A projectile has an acceleration whose magnitude is: always zero changing equal to gravity air resistance | equal to gravity |
| A projectile is given an initial speed of 100 m/s at angle of 30 degrees from horizontal. What is its initial horizontal speed, in m/s? 50 100 86.60 0 | 86.60 |
| A projectile is given an initial speed of 100 m/s at angle of 30 degrees from horizontal. What is its vertical speed, in m/s, when it has reached its maximum height? 0 100 50 86.60 | 0 |
| A projectile is given an initial speed of 100 m/s at angle of 30 degrees from horizontal. What happens to its vertical speed, as it goes up the air? decreasing remains constant increasing remains at zero | decreasing |
| A projectile is given an initial speed of 100 m/s at angle of 30 degrees from horizontal. What happens to its vertical speed, as it goes down back to the ground? remains constant remains at zero increasing decreasing | increasing |
| A projectile is given an initial speed of 100 m/s at angle of 30 degrees from horizontal. What is its horizontal speed while in air? decreasing increasing remains constant remains at zero | remains constant |
| The acceleration due to gravity is ____ m/s2. 98 980 0.98 9.8 | 9.8 |
| Free fall is affected by ____ alone. gravity air resistance pull diagonally push horizontally | gravity |
| A ball dropped and falls freely has an initial speed whose magnitude is: 0 cannot be determined any value from 10 to 100 m/s maximum | 0 |
| A ball dropped and falls freely will have a speed whose magnitude is: remains at zero remains at 9.8 m/s decreasing increasing | increasing |
| A ball dropped, falls freely. Before touchdown, it will reach a final speed whose magnitude is: 9.8 m/s 100 m/s zero maximum | maximum |
| A ball projected vertically upward reached a maximum height in 174 seconds. From the maximum height, how long will it take for the ball to go back to its initial position, in seconds? | 348 seconds |
| A ball projected vertically upward with an initial speed of 380 m/s. What will be its speed as the ball goes back to its initial position, in m/s? | 380 m/s |
| A ball projected vertically upward with an initial speed of 20 m/s. What will be its speed as the ball reaches the maximum height, in m/s? | 0 m/s |
| A ball projected vertically upward with an initial speed of 283 m/s. While traveling upward, what will be its speed after 2 seconds, in m/s? Use g = 10 m/s2 | 263 m/s |
| A ball projected vertically upward. Upon reaching its maximum height, it start moving in downward direction at time t = 0. What will be its speed, in m/s, in downward direction after 40 seconds? Use g = 10 m/s2 | 400 m/s |
| The resultant 200 Newton, 45o has an equilibrant with magnitude _____. 200 Newton 100 Newton 50 Newton 20 Newton | 200 Newton |
| The resultant 200 Newton in the first quadrant has an equilibrant in what quadrant of the Cartesian Coordinate System? III I II IV | III |
| "What is the weight if the mass is 86" Express your final answer as whole number (apply rounding) | 843 N |
| Given a vector of 653 kmph, 202 degrees. Which is the magnitude of the vector? | 653 kmph |
| Given a vector of 819 kmph, 85 degrees. Which is the direction of the vector? | 85° |
| Given 3 vectors below, find the magnitude of their resultant. 35 N east 35 N south 35 N west | 35 N |
| Given 3 vectors below, find the direction of their resultant. 1000 N east 1000 N south 1000 N west | 270° (south) |
| What is the percent difference if the equilibrant is equal to the resultant, in terms of their magnitude? 0 100 50 1000 | 0 |
| Using the force table, the three vectors were balanced by placing counterweights on the fourth unusedstring and locating the appropriate angle or direction. These counterweights on the fourth position represents what vector? equilibrant scalar | equilibrant |
| The tip-tail method is also called _____ method. polygon method experimental method parallelogram method | polygon method |
Created by:
Heirm