## Physics: projectile motion: range of a projectile

Continuing with the golfing premise, the tutor finds the range of the projectile. While this post continues from yesterday’s, its premise begins with my Oct 16 one. We have a projectile whose horizontal velocity is 49m/s (see Oct 16), whose …

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## Physics: projectile motion: time in air over level ground

The tutor continues about projectile motion. Back in my Oct 16 post, I began exploration of a projectile’s motion. The context is a golf ball shot at 55m/s, 27° elevation, over level ground. The post from October 16 resolves the …

## Plant identification from a field guide: dune tansy

The tutor shares a find he’s 90 percent certain about. My daily walk takes me by a lot that’s been cleared but remains vacant. Searching such an area, a botany student will often be rewarded, as in this case. A …

## Physics: projectile motion: finding the horizontal and vertical components of velocity

The tutor gets started with projectiles. Consider the following question: A golf ball is hit over level ground at 55m/s with angle of elevation 27°. Find the vertical and horizontal components of its velocity. Solution: We draw a diagram of …

## Exercise: a change in routine

The tutor shares a discovery about his exercise routine. Last year, I did three 25 minute walks per week, then two harder cardio workouts, 15 to 45 minutes each. The routine worked: as the year progressed, my condition improved. I …

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## Election platforms: NDP (Tom Mulcair)

The tutor offers commentary on the NDP election platform. A party’s leader is perhaps the most important consideration for many voters. “You vote for the leader, not the party,” I’ve heard. Not everyone agrees, of course; some people are loyal …

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## Civic duty: voting

The tutor offers reflections about the coming election. According to my voter’s card from the mail, the Canadian federal election is October 19. In a busy life like mine, with a ten and a thirteen-year-old, you never know when, for …

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## Calculator usage: degree, rad and grad mode on the Staples BD-6120G

The tutor mentions how to change trig units on the Staples BD-6120G. For grade 10 and 11 math students, degree mode is probably needed. You know if you’re in degree mode by a capital D at the top of the …